Chicago shooter who killed 3 posted social media rants January 10, 2021 at 05:16PM

Investigators on Sunday were trying to determine a motive for the Saturday afternoon attacks in which police say 32-year-old Jason Nightengale apparently chose his victims at random. Police killed Nightengale in a shootout just north of the city about four hours after authorities say he shot his first victim in the head in a South Side parking garage.