Man charged after allegedly filming fatal Chicago CTA Blue Line stabbing of sleeping passenger
A Chicago man, Demetrius Thurman, has been charged with first-degree murder after prosecutors say he filmed himself fatally stabbing a sleeping passenger, Dominique Pollion, on a CTA Blue Line train early Jan. 10, 2026, in the Loop.
- Video evidence: Prosecutors say the attack was captured on CTA cameras and on the suspect’s cellphone.
- Victim: Dominique Pollion, 37, stabbed while sleeping on a Blue Line train around 2:17 a.m. on Jan. 10, 2026.
- Suspect: Demetrius Thurman, 40, charged with one count of first-degree murder; authorities say he recorded the attack and aftermath.
- Investigative tools: CTA surveillance and phone forensics — and facial-recognition processing of camera images — helped identify and locate the suspect.
Incident details
What happened: Prosecutors say Dominique Pollion had been sleeping on a Blue Line train for almost an hour before a man later identified as Demetrius Thurman approached from behind, began recording on his cellphone and stabbed Pollion twice — once in the chest near the heart and once in the abdomen — with a knife that had a bright-orange handle.
According to court records and local reporting, Pollion woke up screaming, moved down the aisle and then collapsed. A passenger later alerted platform security at a stop; security found Pollion with stab wounds that were initially hidden by multiple layers of clothing. He was taken to Northwestern Memorial Hospital, where he died.
Recorded evidence and investigators’ findings
Multiple sources of evidence:
- CTA surveillance cameras captured the assault.
- Investigators obtained videos and photographs from Thurman’s phone under a search warrant, including footage of the attack, the aftermath and images of other sleeping passengers.
- Photos of other sleeping riders on the device raised questions about whether the images were opportunistic or part of a larger pattern.
“Somebody got his ass,” investigators say Thurman later said on video filmed outside the train at Clark/Lake station, after recording himself following the attack.
Surveillance imaging was processed through Illinois’ facial-recognition system. A Chicago officer who had encountered Thurman days earlier — when Thurman was sleeping on a Blue Line train and provided his driver’s license — recognized him from a police bulletin; that connection helped investigators locate and identify the suspect.
Arrest and admissions
Chicago police arrested Thurman on Jan. 11 at 210 S. Canal St. in the West Loop. Officers reported he was wearing the same clothes shown in the footage and was carrying the phone that contained the recorded CTA stabbing. A relative identified Thurman in surveillance photos, and prosecutors say Thurman later admitted to the stabbing.
Legal proceedings and background
Charges: Thurman was charged on Jan. 13 with one felony count of first-degree murder. His next hearing is scheduled for Jan. 20, 2026.
Prior record: Public records reviewed by investigators show prior supervision for disorderly conduct in 2014, a DUI in 2017 and a 2023 traffic arrest resulting in supervision.
Implications for San Diego transit and policy
Although the attack occurred in Chicago, the case has lessons for transit systems nationwide, including San Diego. Key considerations for local leaders and riders include:
- Safety and rider confidence: High-profile violent incidents can reduce transit ridership and increase demand for visible staff, improved lighting and extra security on late-night runs.
- Surveillance and privacy: Use of camera footage and facial-recognition tools helps investigations but raises privacy concerns; policymakers should review camera policies, disclosure practices and legal safeguards.
- Mental health and homelessness: Reports that both suspect and victim were sleeping on trains highlight the need for outreach, shelter coordination and mental-health support targeted to transit hubs.
- Digital evidence protocols: Law enforcement and prosecutors should ensure proper collection, preservation and chain-of-custody for phone-based video evidence in transit environments.
Practical takeaways for riders
- Stay aware: Be mindful of surroundings, especially late at night; stay near staff or well-lit areas when possible.
- Report suspicious behavior immediately to transit security or by calling 911.
- If you capture relevant video, preserve the original file and follow law enforcement guidance for sharing it.
- Follow updates from transit agencies and local officials about safety measures and service changes.
Reporting and evidence sources
This account is based on court records and reporting from local outlets. Source reporting includes:
Preserved facts: Victim — Dominique Pollion, 37; Suspect — Demetrius Thurman, 40; Incident — stabbing on CTA Blue Line train at about 2:17 a.m. on Jan. 10, 2026; Evidence — CTA cameras and Thurman’s cellphone containing video and photos; Arrest — Jan. 11 at 210 S. Canal St.; Charge — one count of first-degree murder with next hearing Jan. 20, 2026.
