At least three people were killed and several others injured Saturday in a chaotic shooting spree in Chicago. Police say the deadly chain of events began on Saturday afternoon on the city’s South Side and ended in Evanston when the suspect was killed in a shootout with police—after leaving a trail of victims throughout the city. A University of Chicago student was one of the first to be killed after police say the suspect, identified by Chicago police as Jason Nightengale, opened fire at him in a Hyde Park parking garage. The second shooting occurred not far from the first, after Nightengale allegedly walked into an apartment building and, after asking two people to use a phone, opened fire at them, killing one and leaving the other in critical condition.

Chicago police say the suspect then tried to rob a convenience store and fatally shot a 20-year-old man in the process, after which he left a 15-year-old girl in critical condition by firing at a car she was in. He then is said to have headed north and turned up in Evanston, where police say he took a woman hostage in an IHOP before shooting her and leading officers on a chase. The suspect was killed in a shootout with officers in a Dollar General parking lot a short time later, authorities said. The woman shot in IHOP was described as in critical condition. Investigators were still working late Saturday to piece together all the separate incidents. “We believe this offender was involved in some other incidents in Chicago, I’m not quite sure specifically what those were,” Evanston Police Chief Demitrous Cook told reporters at a late-night press conference.