By CBS 2 Chicago Staff

CHICAGO (CBS) — A man was shot by an assailant he knew in a car downtown Sunday morning.

At 8:10 a.m., the man was sitting in a vehicle with the suspect in the 100 block of East Wacker Drive, east of Michigan Avenue, when the suspect shot him multiple times, police said.

The victim was taken to Northwestern Memorial Hospital in critical condition.

Detectives were talking with a person of interest Sunday morning.

CBS 2 Chicago Staff