Marcos Aleida, 51, was found dead in his South Shore apartment on the morning of January 3, 2026, the city’s first homicide of the year. Officers discovered him before 9:30 a.m. in his residence in the 6700 block of South Jeffery Avenue; he had suffered multiple gunshot wounds to the head, chest, and back and was pronounced dead at the scene. The Cook County Medical Examiner’s Office ruled the death a homicide and the Chicago Police Department opened an investigation.

Details about what led to the shooting remain scarce. No suspects have been publicly identified and no arrests have been announced, and the case remains an active investigation. If anyone knew Marcos Aleida, his routines, neighbors, or saw anything on the morning of January 3, please share information with investigators.