CHICAGO—A man who police say killed three people and wounded four others during a series of shootings in and around Chicago posted nonsensical and expletive-laced videos in the days and hours leading up to the attacks.
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.
