Campus Alert Archive
Grove City

Computer-generated call about a rifle in the library prompts a three-hour lockdown

AI-generated · every claim is source-linked
PAswattingemergency notificationmedium confidence
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Confirmed HoaxDetermined to be a hoax. The institutional response is documented because it reveals how the alert system performed under a perceived real threat.

On Sunday, September 28, 2025, at approximately 4:00 PM EDT, Grove City Borough Police received a call claiming a man with a rifle in a blue shirt was inside the Grove City College library. The campus went into a 3-hour precautionary lockdown while Pennsylvania State Police, Grove City PD, the Mercer County Critical Incident Response Team, and Campus Safety swept the library. No shooter was ever found. State Police later confirmed it was a computer-generated swatting call and that multiple Pennsylvania campuses received similar calls the same day, including West Chester, Millersville, and Shippensburg.

Alerts
3
Response
—
Killed
0
Injured
0
Institution
Grove City College
Private Bachelors · PA
All Grove City cases →
~2,400 studentsGrove City College Campus Safety Alert
Documented Timeline

Alert Sequence

3 messages in sequence · 3 verified verbatim

INITIAL ALERTEmail
Verified verbatimCBS Pittsburgh quoting verbatim Grove City College Campus Safety alert sent at 4:44 PM EDT101 chars
This was reported near the Buhl Library. Please stay inside and follow directions of Law Enforcement.
Sent at 4:44 PM EDT, approximately 15 minutes after a preliminary 4:29 PM EDT alert that named the situation 'potentially dangerous'
Buhl Library is the central library of Grove City College's small 2,400-student campus
The 102-character message contains no shelter-in-place directive on its own, it relies on the earlier 4:29 PM EDT 'potentially dangerous situation' alert as context
UPDATEEmail+55 min
Verified verbatimCBS Pittsburgh quoting verbatim Grove City College Campus Safety alert sent at 5:39 PM EDT143 chars
Campus Safety has issued a precautionary lockdown of the Grove City College campus. Shelter in place until further notice. Details will follow.
Sent at 5:39 PM EDT, escalating to a formal campus-wide lockdown nearly 70 minutes after the initial library alert
The 'precautionary' framing reflects the college's choice to protect the broader campus while the library was being swept rather than declare an active threat
By this point Pennsylvania State Police, Grove City Borough Police, the Mercer County Critical Incident Response Team and Campus Safety were on scene
ALL CLEAREmail+2h 10m
Verified verbatimCBS Pittsburgh quoting verbatim Grove City College Campus Safety alert sent at 6:54 PM EDT116 chars
Campus Safety has lifted the precautionary lockdown for the Grove City College campus. Normal operations can resume.
Sent at 6:54 PM EDT, approximately 2 hours and 25 minutes after the first alert about the library
The all-clear is unusually terse for a 3-hour multi-agency sweep — Grove City withheld the swatting confirmation until later state-police statements
Grove City College, a 2,400-student private Christian liberal arts college, was an unusual target for the swatting wave that previously focused on R1 publics
Message elements

How the first alert is built

To check this alert, Claude (an AI) read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.

This was reported near the Buhl Library. Please stay inside and follow directions of Law Enforcement.

  • Sourcepresent17/25

    Final assessment

    Majority finds Law Enforcement named as the responding authority; a minority read it only as whose directions to follow, not the named issuer.

    Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.

    See all 25 individual reads
    1. present: It tells recipients to "follow directions of Law Enforcement", identifying law enforcement as authority.
    2. absent: No sender or branded signature appears, only "Law Enforcement" referenced for directions.
    3. present: It references "Law Enforcement", a named responding authority.
    4. present: It names "Law Enforcement" as the authority whose directions to follow.
    5. absent: No sender tag or university name appears; "Law Enforcement" is only whose directions to follow, not the named issuer.
    6. present: It refers to "Law Enforcement" whose directions recipients should follow as the authority.
    7. present: Refers to following directions of "Law Enforcement", identifying a responding authority.
    8. present: It references "Law Enforcement" whose directions to follow, a named authority.
    9. present: References "Law Enforcement", a named responding agency to follow directions from.
    10. absent: No sender tag or issuing authority is named; "Law Enforcement" is referenced only as whose directions to follow.
    11. absent: No sender tag or self-naming authority; "Law Enforcement" is referenced only as direction to follow.
    12. absent: No sender tag or issuing authority is named; "Law Enforcement" appears only as directions to follow.
    13. present: It references "Law Enforcement", the responding authority.
    14. absent: No sender tag or named issuing authority appears, though it refers to "Law Enforcement".
    15. present: Identifies "Law Enforcement" as the responding authority directing people.
    16. absent: No sender name or branded signature appears, only "Law Enforcement" to follow, not the sender.
    17. present: Names "Law Enforcement" as the authority whose directions to follow.
    18. present: It tells recipients to "follow directions of Law Enforcement", naming a responding authority.
    19. present: It references "Law Enforcement" whose directions to follow, a named authority.
    20. present: It tells recipients to follow directions "of Law Enforcement", naming the responding authority.
    21. present: Names "Law Enforcement", the responding authority.
    22. absent: No sender tag, university name, or agency is named; only generic "Law Enforcement".
    23. present: It references "Law Enforcement", a named responding authority.
    24. present: Refers to "Law Enforcement", a responding authority.
    25. present: It tells recipients to "follow directions of Law Enforcement", identifying a responding authority.
  • Hazardabsent0/25

    Final assessment

    Unanimous: the message says something was reported near the library but never names the threat.

    What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.

    See all 25 individual reads
    1. absent: It says something "was reported near" the library but never names the threat itself.
    2. absent: No specific hazard is named; "This was reported" lacks an identified threat.
    3. absent: No specific threat is named, only a report near the library.
    4. absent: It says "This was reported" but names no specific hazard in the text.
    5. absent: It only says "This was reported" without naming the specific threat.
    6. absent: No specific hazard is named; it only says "This was reported" without stating the threat.
    7. absent: Says "This was reported near" without naming any specific threat.
    8. absent: It says something "was reported" but names no specific threat in this text.
    9. absent: No specific hazard is named, only "This was reported near".
    10. absent: No specific threat is named; only "This was reported" without stating the hazard.
    11. absent: No specific hazard is named; the threat type is not stated in this text.
    12. absent: No specific hazard is named; it only references "This" without specifying the threat.
    13. absent: No specific threat is named; it only says it was "reported" without stating the hazard.
    14. absent: No specific hazard is named; the threat behind the response is not stated.
    15. absent: No specific threat is named; only a vague reference to what "was reported".
    16. absent: No specific hazard is named, only "This was reported" without saying what.
    17. absent: No specific hazard is named, only "This was reported near" without stating the threat.
    18. absent: No specific hazard is named; only "This was reported" without saying what.
    19. absent: No specific hazard is named, only that something "was reported".
    20. absent: No specific hazard is named; the threat prompting the shelter is not stated.
    21. absent: No specific hazard named; only a reported incident near the library.
    22. absent: No specific hazard is named; the message states a location and instructions without a threat type.
    23. absent: No specific hazard is named; only that something "was reported".
    24. absent: No specific threat is named; the text gives no hazard.
    25. absent: It mentions something "reported" but names no specific hazard in this text.
  • Locationpresent25/25

    Final assessment

    All reads agree on a specific place, the Buhl Library.

    Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.

    See all 25 individual reads
    1. present: It names "the Buhl Library", a specific place.
    2. present: It names "the Buhl Library", a specific place.
    3. present: It names "the Buhl Library", a specific campus location.
    4. present: It names "near the Buhl Library", a specific place.
    5. present: It names "the Buhl Library", a specific place.
    6. present: It names "near the Buhl Library", a specific place on campus.
    7. present: Names "the Buhl Library", a specific place.
    8. present: It names "the Buhl Library", a specific place.
    9. present: Names "the Buhl Library", a specific place.
    10. present: It says the report was "near the Buhl Library", a specific place.
    11. present: Says it was reported "near the Buhl Library", a specific named place.
    12. present: It names "the Buhl Library", a specific place.
    13. present: It names "the Buhl Library", a specific place.
    14. present: Specifies "near the Buhl Library", a named place.
    15. present: Says the report was "near the Buhl Library", a specific place.
    16. present: Specifies "near the Buhl Library", a named place.
    17. present: Says it was reported "near the Buhl Library", a named place.
    18. present: It names "near the Buhl Library", a specific place.
    19. present: It says the report was "near the Buhl Library", a specific place.
    20. present: It says the report was "near the Buhl Library", a specific place.
    21. present: Names "the Buhl Library", a specific place.
    22. present: It says the event "was reported near the Buhl Library", a specific place.
    23. present: It says "near the Buhl Library", a specific place.
    24. present: Names "the Buhl Library", a specific location.
    25. present: It says it was "near the Buhl Library", a specific place.
  • Guidancepresent25/25

    Final assessment

    Unanimous: the alert instructs recipients to stay inside and follow directions of law enforcement, protective actions.

    The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.

    See all 25 individual reads
    1. present: It instructs recipients to "stay inside and follow directions", protective actions.
    2. present: It instructs recipients to "stay inside and follow directions of Law Enforcement".
    3. present: It instructs recipients to "stay inside and follow directions of Law Enforcement".
    4. present: It instructs "stay inside and follow directions of Law Enforcement", protective actions.
    5. present: It instructs recipients to "stay inside" and "follow directions of Law Enforcement".
    6. present: It instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    7. present: Instructs recipients to "stay inside" and "follow directions of Law Enforcement", protective actions.
    8. present: It tells recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    9. present: Instructs "stay inside and follow directions of Law Enforcement", protective actions.
    10. present: It instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    11. present: Instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    12. present: It tells recipients to "stay inside and follow directions of Law Enforcement".
    13. present: It instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    14. present: Instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    15. present: Instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    16. present: Instructs recipients to "stay inside" and "follow directions of Law Enforcement", protective actions.
    17. present: Instructs recipients to "stay inside and follow directions of Law Enforcement".
    18. present: It instructs people to "stay inside" and follow directions, protective actions.
    19. present: It tells recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    20. present: It instructs recipients to "stay inside and follow directions of Law Enforcement".
    21. present: Instructs recipients to "stay inside" and "follow directions of Law Enforcement".
    22. present: It instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    23. present: It instructs "stay inside and follow directions of Law Enforcement", protective actions.
    24. present: Instructs recipients to "stay inside and follow directions of Law Enforcement", protective actions.
    25. present: It instructs recipients to "stay inside" and "follow directions", protective actions.
  • Timeabsent0/25

    Final assessment

    Unanimous: no clock time, date, or recency cue such as now appears.

    When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.

    See all 25 individual reads
    1. absent: No clock time, date, or recency cue such as "now" appears.
    2. absent: No clock time, date, or recency cue appears.
    3. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    4. absent: No clock time, date, or recency cue appears in the text.
    5. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    6. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    7. absent: No clock time, date, or recency cue appears in the text.
    8. absent: No clock time, date, or recency word appears.
    9. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    10. absent: No clock time, date, or recency cue appears in the text.
    11. absent: No clock time, date, or recency cue appears in the text.
    12. absent: No clock time, date, or recency cue appears.
    13. absent: No clock time, date, or recency cue appears in the text.
    14. absent: No clock time, date, or recency cue such as now or immediately appears.
    15. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    16. absent: No clock time, date, or recency word appears in the message.
    17. absent: No clock time, date, or recency cue appears in the text.
    18. absent: No clock time, date, or recency cue appears in the text.
    19. absent: No clock time, date, or recency word appears in the text.
    20. absent: No clock time, date, or recency word appears in the message.
    21. absent: No clock time, date, or recency cue appears.
    22. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    23. absent: No clock time, date, or recency cue appears.
    24. absent: No clock time, date, or recency cue appears in the text.
    25. absent: No clock time, date, or recency word appears.
  • Impactabsent0/25

    Final assessment

    Unanimous absent. All 25 reads agree it reports a location and tells people to stay inside but states no danger or potential consequence.

    What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.

    See all 25 individual reads
    1. absent: Reports a location and instructs people to stay inside but states no danger or potential consequence.
    2. absent: It tells people to stay inside and follow law enforcement but states no danger or potential harm.
    3. absent: Locates a reported incident near the library and gives shelter guidance but states no danger or consequence.
    4. absent: Asks people to stay inside and follow law enforcement but states no harm, injury, or severity.
    5. absent: It tells people to stay inside and follow law enforcement near the library but states no harm or danger.
    6. absent: Reports an incident near the library and tells people to stay inside but states no harm or severity.
    7. absent: Tells people to stay inside and follow law enforcement near the library but states no harm or danger.
    8. absent: Tells people to stay inside near the library but states no harm or danger.
    9. absent: Tells people to stay inside and follow law enforcement directions without stating any specific threat or potential harm.
    10. absent: Locates an incident near a library and tells people to stay inside but states no harm or severity.
    11. absent: Tells people to stay inside near the library and follow law enforcement but states no danger or potential harm.
    12. absent: Tells people to stay inside and follow law enforcement but states no specific danger or harm.
    13. absent: Tells people to stay inside near the library but states no danger or potential harm.
    14. absent: Instructs people to stay inside near the library but names no harm or potential consequence.
    15. absent: Tells people to stay inside and follow law enforcement but states no danger, harm, or severity.
    16. absent: Tells people to stay inside and follow law enforcement near the library but states no harm or severity.
    17. absent: It tells people to stay inside and follow law enforcement but states no specific danger or harm.
    18. absent: Locates an incident and gives shelter guidance but states no danger or potential consequence.
    19. absent: Tells people to stay inside and follow law enforcement but states no danger or potential harm.
    20. absent: Names a location and tells people to stay inside but states no specific danger or harm.
    21. absent: It mentions a report near the library and instructs staying inside but states no specific harm or danger.
    22. absent: Instructs people to stay inside near the library but states no hazard consequence or danger.
    23. absent: Tells people to stay inside and follow law enforcement near a location but states no stated or implied harm.
    24. absent: Asks people to stay inside and follow law enforcement near a library but states no specific harm or danger.
    25. absent: Reports an incident near the library and tells people to stay inside, but states no harm or severity.

Systematic AI judgments with visible reasoning, not human-validated codings.

About this analysis
Context

Background

Grove City College is a private Christian liberal arts college in Mercer County, Pennsylvania, serving roughly 2,400 students. On Sunday, September 28, 2025, at approximately 4:00 PM EDT, Grove City Borough Police received a call claiming an armed man in a blue shirt was inside the Henry Buhl Library. The campus immediately went into lockdown for what would become a 3-hour multi-agency sweep involving Grove City Borough Police, Pennsylvania State Police, the Mercer County Critical Incident Response Team, and Campus Safety. The lockdown was lifted around 7:00 PM EDT after no shooter, victims, or witnesses were found. Pennsylvania State Police later characterized the call as 'computer-generated', a hallmark of the AI-assisted swatting wave that swept US campuses in fall 2025. The same day, three other Pennsylvania campuses received similar swatting calls: West Chester University, Millersville University, and Shippensburg University. The clustering of calls across small private and PASSHE regional schools on a single Sunday demonstrated the swatting group was deliberately broadening from earlier R1 targets like Villanova. Grove City College is the smallest institution targeted in the September 28 wave and one of the smallest private religious campuses ever caught in the swatting playbook. The case is significant because (a) it shows the wave reaching small private liberal arts colleges, (b) the 3-hour duration reflects how multi-agency sweep protocols designed for real threats become amplified disruption when the call is a hoax, and (c) it directly motivated bipartisan PA legislation to make swatting a felony.
Analysis

Key Findings

Grove City College (a 2,400-student private Christian liberal arts college) was the smallest of the four PA campuses swatted on September 28, 2025
The 3-hour lockdown reflected multi-agency sweep protocols, not the actual time needed to verify there was no threat
Pennsylvania State Police explicitly characterized the call as 'computer-generated', the first official confirmation of AI-voice involvement in the wave
September 28 became one of the highest-density swatting days of fall 2025, hitting Grove City, West Chester, Millersville, and Shippensburg
The incident directly motivated bipartisan PA legislation in October 2025 to elevate swatting to a felony
Outcome
Lockdown lifted at approximately 7:00 PM EDT after a comprehensive sweep found no shooter, no victims, and no witnesses. Pennsylvania State Police characterized the call as 'computer-generated.' No injuries. The Grove City incident was one of at least four PA campus swatting events that Sunday, prompting bipartisan PA legislation to make swatting a felony.
Provenance

Sources

  1. News
    Grove City College targeted in false swatting call, state police say — CBS Pittsburgh
    cbsnews.com
    archived copy
  2. News
    Computer-generated swatting call at Grove City College, police — WKBN
    wkbn.com
    archived copy
  3. News
    Armed-gunman hoax locks down Grove City College campus for 3 hours — Allied News
    alliednews.com
    archived copy
  4. Official
    PSP Press Release: False Reports / Swatting Call (Mercer County, September 28, 2025)
    pa.gov
    archived copy
  5. News
    Police investigating potentially dangerous situation at Grove City College — WPXI
    wpxi.com
    archived copy
  6. News
    Grove City College campus on lockdown over 'potentially dangerous situation' — Sharon Herald
    sharonherald.com
    archived copy
  7. News
    Following Villanova August Incident, Bipartisan Bills Aim to Make Swatting Felony in Pennsylvania — Delco Today
    delco.today
    archived copy
Cite this case

Campus Alert Archive. "Grove City College: Computer-generated call about a rifle in the library prompts a three-hour lockdown." Incident of September 28, 2025. Added May 2026; last updated July 2026. https://campusalertarchive.com/case/grove-city-college-swatting-2025-09-28/

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Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.

Tags
swattinggrove-city-collegepennsylvaniaprivate-religioussmall-campusai-generated-calllibrary-targetfall-2025-wavemulti-campus-dayHoax
Added May 2026Updated July 2026Via ingestion