Man under a campus ban seen with a rifle in student housing; arrested the next day
AI-generated · every claim is source-linkedOn September 23, 2024, Ephraim Debisa, 21, who was under a no-trespass order at University of Northern Colorado and had been released from jail only 15 days earlier in an attempted murder case, was seen with an AR-15-style rifle in the Arlington Apartments student housing complex. UNC Police issued a campus safety alert early Wednesday morning while officers searched for the suspect. Debisa was arrested Wednesday afternoon by UNC Police, Greeley PD, and the Weld County Sheriff's Office.
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Alert Sequence
1 message in sequence · 1 verified verbatim
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.
Fellow Bears, I am emailing to let you know about an individual who is not affiliated with our university but has recently been on campus and is someone I believe to be dangerous. Ephraim Debisa (aka Debisa Ephraim), pictured below, has had several interactions with the University of Northern Colorado Police Department (UNC PD) over the past few years, and his recent behavior has given us cause for concern. On Sept. 23, Debisa was seen in the Arlington Apartments, and he was in possession of a firearm. UNC PD responded immediately, but upon arrival, Debisa was no longer in the building. While no one was threatened or harmed during this incident, the UNC PD is actively looking for Debisa. Due to past safety-related incidents, Debisa has been banned from campus. While he may appear friendly, his presence on campus is against the law. We advise anyone who sees Debisa to not approach or engage with him and instead call UNC PD immediately at 970-351-2245, or 911 in the event of an emergency
Sourcepresent25/25
Final assessment
All 25 reads agree that a sender is identified: Identifies sender as "the University of Northern Colorado Police Department (UNC PD)".
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
- present: Identifies sender as "the University of Northern Colorado Police Department (UNC PD)".
- present: Identifies the sender via "University of Northern Colorado Police Department (UNC PD)" and a personal emailer.
- present: The sender identifies as the university writing to "Fellow Bears" and names "University of Northern Colorado Police Department (UNC PD)".
- present: Names the sender as the "University of Northern Colorado Police Department (UNC PD)" and a university official emailing.
- present: Identifies the University of Northern Colorado Police Department (UNC PD) as the responding authority.
- present: The University of Northern Colorado Police Department (UNC PD) is named as the issuing authority.
- present: The sender names "the University of Northern Colorado Police Department (UNC PD)" and signs as university leadership.
- present: Sent by the university leadership and names "University of Northern Colorado Police Department (UNC PD)", the issuing authority.
- present: The sender identifies as university leadership and names "University of Northern Colorado Police Department (UNC PD)".
- present: The University of Northern Colorado Police Department (UNC PD) is named as the responding authority.
- present: Sender is the university official referencing "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies the sender as the university and names "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies the sender as the university and names "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies the sender as the university and references "University of Northern Colorado Police Department (UNC PD)".
- present: The email is from the university and names "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies sender as the university with "University of Northern Colorado Police Department (UNC PD)".
- present: Names the sender as the university and "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies the sender as the university with reference to "University of Northern Colorado Police Department (UNC PD)".
- present: Names "the University of Northern Colorado Police Department (UNC PD)" as the issuing authority.
- present: Identifies the sender as the university with references to "our university" and "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies sender via "University of Northern Colorado Police Department (UNC PD)" and the writer addressing "Fellow Bears".
- present: Sender is the university ("our university") and names "University of Northern Colorado Police Department (UNC PD)".
- present: The message names "the University of Northern Colorado Police Department (UNC PD)" as the issuing authority.
- present: The sender identifies itself as the university with "our university" and names "University of Northern Colorado Police Department (UNC PD)".
- present: Identifies the sender as the University of Northern Colorado Police Department, "UNC PD", a named authority.
Hazardpresent25/25
Final assessment
All 25 reads agree that a hazard is named: Names the threat: a dangerous individual "in possession of a firearm".
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
- present: Names the threat: a dangerous individual "in possession of a firearm".
- present: Names a specific threat, a banned dangerous individual seen "in possession of a firearm".
- present: It describes a dangerous banned individual "in possession of a firearm", a specific armed-person threat.
- present: It names a dangerous individual "in possession of a firearm", an armed-person hazard.
- present: Names a dangerous armed individual "in possession of a firearm", a specific threat.
- present: Names a specific threat: a dangerous individual "in possession of a firearm" on campus.
- present: Describes a banned dangerous individual seen "in possession of a firearm", an armed-person threat.
- present: Describes a dangerous banned individual "in possession of a firearm", a specific armed-person threat.
- present: Names the hazard: a dangerous individual "in possession of a firearm" who has been banned from campus.
- present: Describes an armed individual "in possession of a firearm" deemed dangerous, a specific threat.
- present: Names the threat: a dangerous individual "in possession of a firearm".
- present: Names the threat as a dangerous individual "in possession of a firearm".
- present: Names a specific threat: a dangerous individual "in possession of a firearm".
- present: Names the threat as a dangerous individual "in possession of a firearm", an armed person.
- present: Describes a dangerous armed individual seen "in possession of a firearm".
- present: Names a specific threat: a dangerous individual "in possession of a firearm".
- present: States the threat: a banned dangerous individual "in possession of a firearm" on campus.
- present: Names a dangerous armed individual "in possession of a firearm", a specific threat.
- present: Names a dangerous armed individual "in possession of a firearm", a specific threat.
- present: Names the threat as a dangerous individual "in possession of a firearm" who is being sought.
- present: Names a specific threat: a dangerous person "in possession of a firearm" who has been banned from campus.
- present: Names a dangerous armed individual "in possession of a firearm", a specific threat.
- present: It names an armed person in possession of "a firearm" who is "dangerous", a specific threat.
- present: It names a dangerous armed individual "in possession of a firearm", a specific threat.
- present: Names the threat: a dangerous armed individual "in possession of a firearm" on campus.
Locationpresent25/25
Final assessment
All 25 reads agree that a location is given: States location "Arlington Apartments" and "on campus".
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
- present: States location "Arlington Apartments" and "on campus".
- present: States the location, "seen in the Arlington Apartments" on campus.
- present: It says he was seen "in the Arlington Apartments" and "on campus", specific places.
- present: It says he was seen "in the Arlington Apartments" and on "campus", specific places.
- present: Says he "was seen in the Arlington Apartments" and "on campus", specific locations.
- present: Says he "was seen in the Arlington Apartments" and "on campus".
- present: Says he was "seen in the Arlington Apartments" and "on campus", specific locations.
- present: States he "was seen in the Arlington Apartments" on campus, a specific location.
- present: States the location "Arlington Apartments" and references "campus".
- present: States he was seen "in the Arlington Apartments" and "on campus", specific locations.
- present: Says the person was seen "in the Arlington Apartments" on campus.
- present: Says the person was seen "in the Arlington Apartments" and on "campus".
- present: Says the man was seen in "the Arlington Apartments" on campus.
- present: States he was seen "in the Arlington Apartments" on campus, a specific place.
- present: Says he was seen in the "Arlington Apartments" on campus.
- present: States location as "the Arlington Apartments" and "on campus".
- present: Says he was seen "in the Arlington Apartments" and "on campus", specific places.
- present: States he was seen "in the Arlington Apartments" on campus.
- present: Says he "was seen in the Arlington Apartments" and references being on "campus", specific places.
- present: Specifies "campus" and "the Arlington Apartments" where the person was seen.
- present: Says he was seen "in the Arlington Apartments" and "on campus".
- present: Says he was seen in "the Arlington Apartments" and "on campus", specific places.
- present: It says the individual was "seen in the Arlington Apartments", a specific place on campus.
- present: It says he was seen "in the Arlington Apartments" and "on campus", specific locations.
- present: States the location, "the Arlington Apartments", and "on campus", specific places.
Guidancepresent25/25
Final assessment
All 25 reads agree that guidance is given: Advises recipients "to not approach or engage with him" and to "call UNC PD immediately".
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
- present: Advises recipients "to not approach or engage with him" and to "call UNC PD immediately".
- present: Instructs recipients "not approach or engage with him and instead call UNC PD immediately".
- present: It advises recipients to "not approach or engage with him" and to "call UNC PD immediately", protective actions.
- present: It advises recipients to "not approach or engage with him" and "call UNC PD immediately".
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients "not to approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients to "not approach or engage with him and instead call UNC PD immediately", protective actions.
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately", a protective instruction.
- present: Advises recipients to "not approach or engage with him and instead call UNC PD immediately", protective actions.
- present: Advises recipients "not approach or engage" and to "call UNC PD immediately", protective actions.
- present: Advises recipients to "not approach or engage with him" and to "call UNC PD immediately", protective actions.
- present: Advises recipients "not to approach or engage with him" and to "call UNC PD immediately".
- present: Advises recipients to "not approach or engage with him and instead call UNC PD immediately", protective actions.
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises to "not approach or engage with him and instead call UNC PD immediately", protective action.
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients to "not approach or engage with him and instead call UNC PD immediately", protective action.
- present: Advises recipients to "not approach or engage with him" and to "call UNC PD immediately".
- present: Advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients "not to approach or engage" and to "call UNC PD immediately".
- present: It advises anyone who sees him "to not approach or engage with him and instead call UNC PD immediately", a protective action.
- present: It advises recipients "to not approach or engage with him and instead call UNC PD immediately".
- present: Advises recipients "to not approach or engage with him and instead call UNC PD", a protective action.
Timepresent25/25
Final assessment
All 25 reads agree that timing is conveyed: Gives the date "On Sept. 23" and notes UNC PD "is actively looking" indicating recency.
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
- present: Gives the date "On Sept. 23" and notes UNC PD "is actively looking" indicating recency.
- present: Gives recency with "On Sept. 23" and "recently been on campus".
- present: It states the sighting occurred "On Sept. 23" and references "recently" and "immediately", recency cues.
- present: It gives the date "On Sept. 23" for the sighting, a recency cue.
- present: States "On Sept. 23" and "recent behavior", a date and recency cue.
- present: States "On Sept. 23" and "recently", conveying recency and date.
- present: States the date "On Sept. 23" and "recent" behavior, conveying recency.
- present: Says "On Sept. 23, Debisa was seen", giving a date.
- present: Conveys recency with the date "On Sept. 23" and "recently been on campus".
- present: Gives the date "On Sept. 23" and "recently", a recency cue.
- present: States the date "On Sept. 23" when he was seen with a firearm.
- present: States the date "On Sept. 23" and notes the activity is recent and ongoing.
- present: States the incident date "On Sept. 23" and recency cue "recently been on campus".
- present: Gives recency with "On Sept. 23" and "recently been on campus".
- present: States the date "On Sept. 23" and "call UNC PD immediately".
- present: Gives the date "On Sept. 23" indicating when the sighting occurred.
- present: Gives recency with "On Sept. 23" and "recently been on campus".
- present: States "On Sept. 23, Debisa was seen", giving a specific date.
- present: States "On Sept. 23" and "recently", giving date and recency cues.
- present: Gives recency with "On Sept. 23" and references his "recent behavior".
- present: Gives recency with the dated sighting "On Sept. 23" and instruction to call "immediately".
- present: States the date "On Sept. 23" and "recently", conveying recency.
- present: It gives the date "On Sept. 23" and says "recently", conveying recency.
- present: It cites the date "On Sept. 23" when the individual was seen with a firearm.
- present: Gives the date "On Sept. 23" and notes "recently been on campus", conveying recency.
Impactpresent25/25
Final assessment
Unanimous present; all reads agree warning of an individual believed to pose a danger conveys a potential threat of harm to the community.
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
- present: Describes a person believed to be dangerous who was seen on campus with a firearm, conveying clear potential harm.
- present: Describes an individual believed to be dangerous who was seen with a firearm and advises not to approach, conveying danger.
- present: Describes a person believed to be dangerous who was in possession of a firearm, explicitly conveying danger.
- present: It states the individual is believed to be dangerous and was in possession of a firearm, conveying explicit danger.
- present: It describes an individual believed to be dangerous who was in possession of a firearm on campus, an explicit danger.
- present: States the individual is believed to be dangerous and was seen with a firearm, an explicit danger and weapon statement.
- present: It describes an individual the writer believes to be dangerous who was in possession of a firearm and advises not to approach which conveys a threat.
- present: Warns of an individual the president believes to be dangerous who was seen with a firearm, conveying a lethal threat.
- present: Describes an individual believed to be dangerous who was in possession of a firearm and warns people not to approach, conveying clear danger.
- present: The message states an individual believed to be dangerous was in possession of a firearm and advises not to approach him, conveying a clear danger.
- present: Describes a person believed to be dangerous who was in possession of a firearm, conveying threat of lethal force.
- present: The message describes an individual believed to be dangerous who was in possession of a firearm on campus, a stated threat.
- present: The message describes an individual believed to be dangerous who was seen in possession of a firearm on campus, conveying a weapon threat.
- present: Describes a banned individual believed to be dangerous who possessed a firearm and advises not to approach, conveying danger.
- present: Describes an individual believed to be dangerous who was in possession of a firearm, an explicitly stated danger.
- present: The message states the individual is believed to be dangerous and was in possession of a firearm, the explicit weapon and danger label conveying harm potential.
- present: It describes an individual believed to be dangerous who was in possession of a firearm on campus, conveying a stated danger.
- present: The message describes an individual the writer believes to be dangerous who possessed a firearm and advises not to approach or engage, conveying a stated danger.
- present: It describes an individual believed to be dangerous who was in possession of a firearm on campus, with the stated weapon and danger conveying lethal threat.
- present: States the individual is believed to be dangerous and was seen in possession of a firearm, conveying a clear danger.
- present: States the individual is believed to be dangerous and was in possession of a firearm which conveys explicit danger.
- present: Describes an individual believed to be dangerous who was in possession of a firearm, explicitly labeling him dangerous.
- present: Describes a banned individual believed to be dangerous who was seen with a firearm, conveying a stated danger.
- present: The message describes an individual believed to be dangerous who was seen in possession of a firearm, conveying a threat of harm.
- present: Describes a person believed to be dangerous who was in possession of a firearm on campus, conveying a stated threat.
Systematic AI judgments with visible reasoning, not human-validated codings.
About this analysisBackground
Key Findings
Sources
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Campus Alert Archive. "University of Northern Colorado: Man under a campus ban seen with a rifle in student housing; arrested the next day." Incident of September 23, 2024. Added May 2026; last updated July 2026. https://campusalertarchive.com/case/university-of-northern-colorado-armed-person-campus-2024-09-23/
Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.