Brian Timothy Strouse was a 33-year-old Chicago Police Department officer killed on June 30, 2001, while conducting plainclothes surveillance of gang activity in the Near West Side. Around 2:00 a.m. in an alley at 1835 South Loomis Street, he and his partners came under gunfire. Hector Sanchez Delgado, then 16 and working as security for the Ambrose Nation drug operation, fired, reportedly mistaking Strouse for a rival La Raza gang member. Officer Strouse was struck multiple times, including a fatal wound that exited the back of his head; he was taken to Cook County Hospital and pronounced dead the same morning at 9:09 a.m. A .40 caliber Smith & Wesson semiautomatic pistol was recovered with Delgado’s fingerprints on the magazine, and Delgado confessed during a videotaped interrogation. On September 17, 2003, Delgado was convicted of first-degree murder and sentenced to life in prison. Strouse’s death was ruled a line-of-duty death and he is memorialized on law enforcement memorials.

If anyone has information about Officer Strouse’s final assignment or the investigation that has not been shared publicly, please come forward.