Campus Alert Archive
UIowa

Knife threats near a science building prompt alert; suspect later arrested

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Confirmed Threat

On April 4, 2024, the University of Iowa issued a Hawk Alert at 9:42 AM CDT after reports of a man making threats with a knife near Van Allen Hall. The suspect, later identified by police as Jonathan Kim, 47, was wearing jeans and a dark jacket and was last seen near the science building.

Alerts
2
Response
—
Killed
—
Injured
—
Institution
University of Iowa
Public R1 · IA
All UIowa cases →
~31,240 studentsHawk Alert
Official alert policy
Read when and how UIowa says it will use Hawk Alert: summarized, quoted, and analyzed.
Documented Timeline

Alert Sequence

2 messages in sequence · 2 verified verbatim

INITIAL ALERTSMS
Verified verbatimUniversity of Iowa Hawk Alert Archive (page title = full SMS)152 chars
HAWK ALERT: Male subject making threats with a knife wearing jeans and a dark jacket last seen near Van Allen, avoid the area. More: emergency.uiowa.edu
Verbatim text confirmed from the University of Iowa Emergency Updates page
Van Allen Hall is a major science building on the east side of the Pentacrest, housing the Department of Physics and Astronomy
ALL CLEARSMS+59 min
Verified verbatimUI Hawk Alert page situation update 04/04/2024 10:41 AM (full HAWK ALERT SMS text)135 chars
HAWK ALERT: No injuries were reported. Police continue to investigate. Resume normal activity. See http://emergency.uiowa.edu for more.
Situation-update HAWK ALERT on the official knife-threat page dated 04/04/2024 10:41 AM.
Prior confirmed template reused other incidents' resume-normal-activity wording; replaced with incident-specific text.
Uses http://emergency.uiowa.edu (not https) as posted on the archive page.
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.

HAWK ALERT: Male subject making threats with a knife wearing jeans and a dark jacket last seen near Van Allen, avoid the area. More: emergency.uiowa.edu

  • Sourcepresent25/25

    Final assessment

    All 25 reads agree the source is present; the branded HAWK ALERT tag identifies the University of Iowa as sender.

    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: Opens with branded signature "HAWK ALERT", identifying the sender.
    2. present: It opens with "HAWK ALERT", a branded sender tag.
    3. present: Branded "HAWK ALERT" signature identifies the University of Iowa system as sender.
    4. present: The branded signature "HAWK ALERT" identifies the University of Iowa as sender.
    5. present: Opens with branded signature "HAWK ALERT", identifying the sender.
    6. present: It opens with "HAWK ALERT", a branded signature identifying the sender.
    7. present: The branded "HAWK ALERT" signature identifies the University of Iowa sender.
    8. present: Opens with the branded signature "HAWK ALERT", identifying the sender.
    9. present: Branded "HAWK ALERT" signature identifies the sender.
    10. present: It opens with the branded "HAWK ALERT" signature identifying the sender.
    11. present: The branded signature "HAWK ALERT" identifies the university sender.
    12. present: Branded signature "HAWK ALERT" identifies the sender.
    13. present: Opens with branded tag "HAWK ALERT", identifying the sender.
    14. present: The branded signature "HAWK ALERT" identifies the sending system.
    15. present: The branded signature "HAWK ALERT" identifies the sending alert system.
    16. present: Opens with the branded signature "HAWK ALERT".
    17. present: The "HAWK ALERT" signature identifies the University of Iowa system as sender.
    18. present: It opens with the branded signature "HAWK ALERT", identifying the sender.
    19. present: The message opens with the branded signature "HAWK ALERT", identifying the sender.
    20. present: It opens with the branded signature "HAWK ALERT", identifying the sender.
    21. present: Opens with the branded signature "HAWK ALERT", identifying the sender.
    22. present: Opens with branded signature "HAWK ALERT", identifying the sender.
    23. present: The branded "HAWK ALERT" signature identifies the sender.
    24. present: The branded "HAWK ALERT" tag identifies the sender.
    25. present: The branded "HAWK ALERT" signature identifies the university sender.
  • Hazardpresent25/25

    Final assessment

    Unanimous that the hazard is present; a male subject making threats with a knife is named.

    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. present: Names a "Male subject making threats with a knife", a specific threat.
    2. present: It names a "Male subject making threats with a knife", a specific threat.
    3. present: Names a "Male subject making threats with a knife", a specific armed threat.
    4. present: It names a "Male subject making threats with a knife", a specific threat.
    5. present: States a "Male subject making threats with a knife", a specific threat.
    6. present: It names a "Male subject making threats with a knife", a specific threat.
    7. present: It names a "Male subject making threats with a knife", a specific armed-person threat.
    8. present: States a "Male subject making threats with a knife", a specific threat.
    9. present: Names a "Male subject making threats with a knife", a specific threat.
    10. present: It names a "Male subject making threats with a knife", a specific threat.
    11. present: It names a "Male subject making threats with a knife", a specific threat.
    12. present: Names a "Male subject making threats with a knife", a specific threat.
    13. present: Names a "Male subject making threats with a knife", a specific threat.
    14. present: It names a "Male subject making threats with a knife", a specific armed-person hazard.
    15. present: It names a "Male subject making threats with a knife", a specific threat.
    16. present: Names "Male subject making threats with a knife", a specific threat.
    17. present: It names a "Male subject making threats with a knife", a specific threat.
    18. present: It names a "Male subject making threats with a knife", a specific armed threat.
    19. present: It names a "Male subject making threats with a knife", a specific threat.
    20. present: It names a "Male subject making threats with a knife", a specific threat.
    21. present: States a "Male subject making threats with a knife", a specific armed threat.
    22. present: Names "Male subject making threats with a knife", a specific threat.
    23. present: It names a "Male subject making threats with a knife", a specific threat.
    24. present: It names a subject "making threats with a knife", a specific threat.
    25. present: It names a "Male subject making threats with a knife", a specific threat.
  • Locationpresent25/25

    Final assessment

    All 25 reads agree a location is given, citing the subject last seen near Van Allen.

    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: Says "last seen near Van Allen", a specific place.
    2. present: It says "near Van Allen", a specific place.
    3. present: Says "near Van Allen", a specific building location.
    4. present: It says "last seen near Van Allen", a specific place.
    5. present: Says "last seen near Van Allen", a specific place.
    6. present: It says "last seen near Van Allen", a specific place.
    7. present: It says the subject was "last seen near Van Allen", a specific location.
    8. present: Says "last seen near Van Allen", a specific place.
    9. present: Locates the subject "near Van Allen".
    10. present: It says "near Van Allen", a specific building location.
    11. present: It locates the subject "near Van Allen".
    12. present: Locates the subject "near Van Allen".
    13. present: Says "last seen near Van Allen", a specific location.
    14. present: It says the subject was "last seen near Van Allen", a named place.
    15. present: It says the subject was "last seen near Van Allen", a specific place.
    16. present: Says "last seen near Van Allen", a specific place.
    17. present: It says the subject was "last seen near Van Allen", a specific building.
    18. present: It locates the subject "near Van Allen", a specific place.
    19. present: It says the subject was "last seen near Van Allen", a named place.
    20. present: It locates the subject "near Van Allen", a specific place.
    21. present: Says "last seen near Van Allen", a specific place.
    22. present: Says "last seen near Van Allen", a specific place.
    23. present: It says the subject was "last seen near Van Allen", a specific place.
    24. present: It says "last seen near Van Allen", a specific place.
    25. present: It locates the subject "near Van Allen", a campus building.
  • Guidancepresent25/25

    Final assessment

    Unanimous that guidance is present; recipients are told to avoid the area.

    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: Instructs recipients to "avoid the area".
    2. present: It instructs recipients to "avoid the area".
    3. present: Instructs recipients to "avoid the area".
    4. present: It instructs to "avoid the area", a protective action.
    5. present: Instructs recipients to "avoid the area".
    6. present: It instructs recipients to "avoid the area".
    7. present: It instructs recipients to "avoid the area", a protective action.
    8. present: Instructs to "avoid the area", a protective action.
    9. present: Instructs to "avoid the area".
    10. present: It instructs recipients to "avoid the area".
    11. present: It instructs recipients to "avoid the area".
    12. present: Instructs recipients to "avoid the area".
    13. present: Instructs to "avoid the area", a protective action.
    14. present: It instructs recipients to "avoid the area".
    15. present: It instructs recipients to "avoid the area", a protective action.
    16. present: Instructs recipients to "avoid the area".
    17. present: It instructs recipients to "avoid the area".
    18. present: It instructs recipients to "avoid the area".
    19. present: It instructs recipients to "avoid the area".
    20. present: It instructs recipients to "avoid the area", a protective action.
    21. present: Instructs recipients to "avoid the area".
    22. present: Instructs recipients to "avoid the area", a protective action.
    23. present: It instructs recipients to "avoid the area".
    24. present: It instructs recipients to "avoid the area".
    25. present: It instructs recipients to "avoid the area".
  • Timeabsent2/25

    Final assessment

    Most reads find time absent with no clock time or date; two count last seen as a recency cue.

    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 appears in the text.
    2. absent: No clock time, date, or recency word like "now" appears.
    3. absent: No clock time, date, or recency cue such as "now" appears.
    4. absent: No clock time, date, or recency cue such as "now" appears.
    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. present: It says the subject was "last seen", conveying recency of the sighting.
    8. absent: No clock time, date, or recency word such as "now" appears in the text.
    9. absent: No clock time, date, or recency cue appears.
    10. absent: No clock time, date, or recency cue such as "now" appears.
    11. absent: No clock time, date, or recency cue appears in the text.
    12. absent: No clock time, date, or recency cue such as "now" appears.
    13. absent: No clock time, date, or recency word appears in the text.
    14. absent: No clock time, date, or recency word such as "now" appears.
    15. absent: No clock time, date, or recency cue such as "now" appears in the text.
    16. absent: No clock time, date, or recency cue appears in the text.
    17. absent: No clock time, date, or recency cue such as "now" appears.
    18. absent: No clock time, date, or recency cue appears, only the descriptor "last seen".
    19. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
    20. present: It says "last seen", a recency cue about timing.
    21. absent: No clock time, date, or recency word like "now" appears in the text.
    22. absent: No clock time, date, or recency cue appears; "last seen" describes location not time.
    23. absent: No clock time, date, or recency cue appears in the text.
    24. absent: No clock time, date, or recency cue appears in the text.
    25. absent: No clock time, date, or recency word appears in the text.
  • Impactpresent24/25

    Final assessment

    Present by 24-1 majority; the armed-person alert conveys lethal danger to people from a weapon, with one lone dissent.

    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. present: Reports a subject making threats with a knife, conveying clear potential for harm to people.
    2. present: Describes a subject making threats with a knife, conveying a clear danger of harm.
    3. present: Reports a male subject making threats with a knife, conveying a clear threat of harm.
    4. present: It reports a subject making threats with a knife and advises avoiding the area, conveying a danger to people.
    5. present: It reports a male making threats with a knife and tells people to avoid the area, conveying a violent danger.
    6. present: Reports a subject making threats with a knife, conveying a weapon-based threat of harm.
    7. present: It describes a male making threats with a knife which conveys a clear danger of harm.
    8. present: Reports a subject making threats with a knife, conveying a stated danger of harm to people.
    9. present: Reports a male making threats with a knife, an explicit threat of harm with a weapon.
    10. present: The alert reports a subject making threats with a knife, conveying a clear threat of harm beyond merely naming a weapon.
    11. present: Describes a male subject making threats with a knife, conveying the threat of harm from the weapon.
    12. present: The alert describes a male making threats with a knife, an explicitly stated danger of harm.
    13. present: The alert reports a subject making threats with a knife and tells people to avoid the area, conveying a weapon threat to people.
    14. present: Reports a subject making threats with a knife, conveying a threat of harm.
    15. present: Describes a subject making threats with a knife, conveying a clear threat of harm.
    16. present: The alert describes a subject making threats with a knife, an explicit weapon threat conveying potential for harm.
    17. present: It reports a male making threats with a knife and tells people to avoid the area, conveying a stated weapon threat to people.
    18. absent: The alert reports a male making threats with a knife and to avoid the area but states no specific harm or consequence beyond naming the threat.
    19. present: It reports a male making threats with a knife and tells people to avoid the area, conveying a stated weapon threat to people.
    20. present: Reports a subject making threats with a knife, an explicitly stated threat of harm with a weapon.
    21. present: Describes a male making threats with a knife which conveys a clearly implied threat of harm beyond merely naming a weapon.
    22. present: Reports a male making threats with a knife and directs people to avoid the area, implying clear danger of harm.
    23. present: Reports a male making threats with a knife, conveying an explicit threat of harm with a weapon.
    24. present: The alert describes a male making threats with a knife, conveying a clear threat of violent harm.
    25. present: Reports a male making threats with a knife and tells people to avoid the area, conveying clear danger.

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

About this analysis
Context

Background

On the morning of April 4, 2024, Iowa City and University of Iowa Police responded to reports of a man carrying a knife near the intersection of North Dubuque and Jefferson streets, close to Van Allen Hall on the University of Iowa campus. The university issued a Hawk Alert at 9:42 AM CDT, the first such alert of the spring semester, describing the suspect as a male wearing jeans and a dark jacket. The alert prompted shelter-in-place responses in nearby buildings during morning classes. Iowa City police later clarified that "no threats were made" directly to individuals, though witnesses reported the man was behaving erratically with a knife. An all-clear was issued approximately one hour later. In May 2024, Jonathan Kim, 47, was arrested and charged with assault while displaying a dangerous weapon in connection with the incident. The Daily Iowan later published an analysis of Hawk Alert decision-making in response to this incident.
Analysis

Key Findings

The Hawk Alert text was confirmed verbatim from the University of Iowa Emergency Updates page
Iowa City police later clarified that no direct threats were made to individuals despite the alert describing 'threats with a knife'
The incident prompted a Daily Iowan investigation into how university officials decide when to issue a Hawk Alert
Outcome
An all-clear was issued approximately one hour later. Jonathan Kim was later arrested and charged with assault while displaying a dangerous weapon. Iowa City police confirmed no direct threats were made against individuals and no injuries occurred.
Provenance

Sources

  1. Official
    HAWK ALERT: Male subject making threats with a knife (University of Iowa Emergency Updates)
    emergency.uiowa.edu
    archived copy
  2. Official
    Arrest made following April 4 Hawk Alert (UI Police Department)
    police.uiowa.edu
    archived copy
  3. News
    UI issues Hawk Alert for knife threat, last seen near Van Allen Hall (CBS2 Iowa)
    cbs2iowa.com
    archived copy
  4. News
    Iowa City police: 'No threats were made' in Hawk Alert incident (The Gazette)
    thegazette.com
    archived copy
  5. Student Paper
    Here's how UI officials decide what goes into a Hawk Alert (Daily Iowan)
    dailyiowan.com
    archived copy
  6. Official
    Hawk Alert Archive — University of Iowa Emergency Updates
    emergency.uiowa.edu
    archived copy
Cite this case

Campus Alert Archive. "University of Iowa: Knife threats near a science building prompt alert; suspect later arrested." Incident of April 4, 2024. Added May 2026; last updated July 2026. https://campusalertarchive.com/case/university-of-iowa-armed-person-2024-04-04/

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

Tags
armed-personknifeiowabig-tenhawk-alertvan-allen-hallmorning-incidentarrest
Added May 2026Updated July 2026Via ingestion