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'Purge'-masked suspect accused of killing college student at Halloween bash — before his sister helps nab him

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Fox News. (2026, November 15). 'Purge'-masked suspect accused of killing college student at Halloween bash — before his sister helps nab him. Fox News. https://www.foxnews.com/us/purge-masked-suspect-accused-killing-college-student-halloween-bash-sister-helps-nab-him

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Fox News · collected 2026-11-15 · by Fox News

Quick Summary

Police in Boulder, Colorado, have identified Omar Perez, 18, as the primary suspect in a shooting that killed University of Colorado Boulder student Luca Hanlon, 19, during a Halloween party on October 31. The shooting occurred after Perez, wearing a "Purge" mask, returned to the house where he had earlier been asked to leave, leading to a confrontation that resulted in Hanlon's death and another student being injured. Perez's sister helped identify him through a Life360 app that tracked his movements to the scene of the shooting.
Written by AI on 2026-11-15, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

On October 31, 2026, a college student, Luca Hanlon, was killed during a Halloween party in Boulder’s University Hill neighborhood, just off the University of Colorado Boulder campus. The primary suspect, Omar Perez, 18, was arrested and faces murder and related charges. Police released security footage showing three additional individuals, including two males, one in an "Art the Clown" shirt and another in a red hoodie, and a female witness, seeking public assistance to identify them. It is unclear whether these individuals will face charges. The investigation remains ongoing, with prosecutors considering additional charges.

Written for “Luca Hanlon Halloween Murder Investigation” on 2026-11-15, grounded in this article and the 0 other(s) covering the same event.
Why this leaning score
This article does not take a side on a contested political question, so it has no leaning score. That is an answer rather than a gap: a match report or a rescue can be warmly or critically written without being left or right, and scoring it anyway is how approval of a subject gets recorded as a political position.
No political leaning scored for article 155074 · logged 2026-11-15

Compared with similar articles

Nothing to compare against. No article is close enough to this one for the pipeline to have linked or judged the pair.

Story

Luca Hanlon Halloween Murder Investigation
Crime & Law · 1 article(s) covering the same event.
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
39
sentences that state something as happening or true
Uncertain
21%
8 of 39 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
67/100
Fox News's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Crime & Law
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-11-15 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

Fox News · 7754 article(s) · 14 correction(s) detected
Running correction rate · 14 correction(s)

Who wrote this

Fox News
473 article(s) here · 1 carrying a prediction
It’s unclear whether they will face charges.
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The couple decided to leave Canada in January 2025 and officially moved back to the United States in May of that year. MAID — Canada’s medical assistance in dying program — is described by Health Canada as “a health service that allows eligible people to receive help from a medical practitioner in ending their life.”
Comedian Bill Maher issued a preemptive warning to Democrats after their sweeping midterm election wins, urging the party not to mistake its victories for a mandate to revive “bad ideas” that could drive voters back to the GOP.
“We will now establish an operational base at the stadium so we can continue advancing deeper into territory controlled by the gangs,” he said.
Van Hollen announced his bid to replace Schumer on Thursday, with support from progressive lawmakers, including Sen. Bernie Sanders, I-Vt., and Sen.-elect Abdul El-Sayed, D-Mich. Fetterman said a Van Hollen victory would be troubling.
Missouri will load up against Georgia’s run game, opening things up for Stockton through the air.
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Georgia’s defense has been suffocating, and Missouri will try to shorten the game.
A methodical, low-possession game would favor the Under at 47.5.
Wire or desk byline, not an individual reporter.
Also by Fox News
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 473 articles by Fox News →

Topics

Boulder Boulder Police Colorado Fox News Digital University of Colorado Boulder

Subjects

Perez PERSON · 17× Fox News Digital ORG · 4× Boulder GPE · 3× Hanlon PERSON · 2× Thornton GPE · 2× Waugh PERSON · 2× Boulder Police ORG · 1× Colorado GPE · 1× Dionne Waugh PERSON · 1× University of Colorado Boulder ORG · 1×

Narrative

After the arrest, detectives asked for the public's help in identifying three other people seen in video and photos from that night, including two males, one wearing an "Art the Clown" shirt and another in a red hoodie, and a female witness.
framing: mixed · carried by 1 article(s) · first seen 2026-11-15
It’s unclear whether they will face charges.

Claims (39 extracted, 8 hedged)

Colorado police have identified the people sought in security footage released after a Halloween party shooting that killed a University of Colorado Boulder student, as prosecutors consider additional charges. asserted
prosecutors → identify → charges
On Thursday, Boulder Police Public Information Officer Dionne Waugh confirmed to Fox News Digital that "everyone in the photos and video we released" has now been identified. asserted
we → confirm → photos
The primary suspect, Omar Perez, 18, faces murder and related charges in the death of Luca Hanlon, 19, following a deadly confrontation at an off-campus Oct. 31 party in Boulder’s University Hill neighborhood. asserted
suspect → face → neighborhood
After the arrest, detectives asked for the public's help in identifying three other people seen in video and photos from that night, including two males, one wearing an "Art the Clown" shirt and another in a red hoodie, and a female witness. asserted
detectives → ask → hoodie
It’s unclear whether they will face charges. uncertain
they → ’ → charges
When and if there are additional arrests or charges, I will send out a news release," Waugh said. asserted
Waugh → be → release
Shannon Carbone, the public information officer (PIO) for the Boulder County District Attorney’s Office, told Fox News Digital that prosecutors "successfully argued in court Tuesday to have Perez held without bond." Perez's preliminary hearing is scheduled for Feb. 10, 2027, according to the District Attorney's Office. The Colorado Public Defender’s Office declined to comment on the case. uncertain
Office → tell → case
The university did not immediately respond to requests for comment. asserted
university → respond → comment
According to a Boulder police arrest affidavit, police first responded to a home off Marine Street around 9:58 p.m. on Halloween after receiving a noise complaint. uncertain
police → accord → complaint
Responding officers issued a nuisance-party citation, and hundreds of people left the gathering. asserted
hundreds → respond → gathering
Around 90 minutes later, at 11:28 p.m., officers returned after a call concerning gunshots fired. asserted
officers → return → gunshots
Witnesses told authorities that Perez had been in the group of people that left, but he returned to the residence with six others. asserted
he → tell → others
They were asked to leave, but Perez and his group allegedly became irate, leading to a scuffle in the living room and on the front porch. uncertain
Perez → ask → porch
A witness said Perez appeared to be wearing a SWAT uniform and a "Purge" mask. asserted
Perez → say → uniform
A resident at the home put Perez in a headlock, prompting Perez to allegedly pull out a gun and open fire, the affidavit stated. uncertain
affidavit → put → fire
One witness told police he heard Perez threaten, "Oh, I could shoot this place up." Perez shot Hanlon in the neck and another 19-year-old student in the leg. Hanlon died the following day at Boulder Community Health. "I do not have any other updates on the second victim because of privacy. uncertain
I → tell → privacy
If that changes I will send out a news release," Waugh told Fox News Digital. asserted
Waugh → change → Digital
Sister identifies suspect asserted
Sister → identify → suspect
The arrest affidavit stated that Perez’s sister saw photos released by Boulder police and contacted them after recognizing her brother's clothes. asserted
sister → state → clothes
She then checked the family's "Life360" app, which tracked Perez arriving at the residence around the time of the shooting. asserted
Perez → check → shooting
The app also mapped his path following the shooting. asserted
app → map → shooting
Over the next several hours, Perez allegedly traveled through Westminster, Arvada, Keenesburg, and then back to Thornton. uncertain
Perez → travel → Thornton
"The defendant was arrested in Thornton. asserted
defendant → arrest → Thornton
He is not a CU student and, contrary to some rumors, was not arrested on campus," Carbone told Fox News Digital. asserted
Carbone → arrest → Digital
His sister told investigators that days before the shooting, Perez illegally purchased a 10mm Glock "on the street" and posted photos of the weapon on Instagram. asserted
Perez → tell → Instagram
She said he had replaced a revolver he "threw in some bushes" after accidentally shooting himself in the calf on Sept. 26. asserted
he → say → Sept.
The affidavit also noted that Perez and other people who accompanied him traveled in a newer red Audi sedan. asserted
who → note → sedan
When Perez picked his sister up from work, she got into the Audi and noticed a "black purge looking mask" on the floorboard. asserted
she → pick → floorboard
She also told police three people were in the vehicle with Perez. asserted
people → tell → Perez
Perez allegedly told his sister that they had been beaten up earlier at a party they attended, "by four guys and his friends," the affidavit stated. uncertain
affidavit → tell → guys
In addition to murder with extreme indifference, Perez faces first-degree assault and attempted first-degree murder charges, both with extreme indifference. asserted
Perez → face → indifference
"For first degree murder, the only sentence allowed under law is life in prison without the possibility of parole. asserted
sentence → allow → parole
Additional charges will likely be filed," Carbone said. asserted
Carbone → file → ?
Luca Hanlon CU Boulder identified Hanlon, of Pennsylvania, as a second-year media production student in its College of Communication, Media, Design and Information. asserted
Hanlon → identify → Communication
"It doesn't feel real. asserted
It → feel → ?
If I needed a shoulder to cry, he was there, to celebrate the biggest wins in life. asserted
he → need → life
He was just like an all-around, stand-up, great, just model citizen," Hanlon’s friend, Jack Anderson, told Denver’s ABC 7. asserted
friend → stand → ABC
"I would say he was who I aspired to be in life. asserted
I → say → life
Anyone with any information about the case is urged to contact Boulder police at 303-441-3333, or submit tips online at the police department’s Evidence Submission Portal. asserted
Anyone → urge → Portal
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