The shooting happened just before 9 a.m. in the 2000-block of West Berteau Avenue, police said.
A 74-year-old man was getting out of his vehicle when two people started shooting in his direction, CPD said.
An alderman told ABC7 Chicago that the victim is a retired police sergeant. It is unknown at which department the victim served as a police sergeant.
The victim was shot twice in the left arm and had a graze wound to the neck. He was taken to the hospital in critical condition.
No one was in custody. CPD Area Three Detectives are investigating.
INTERACTIVE SAFETY TRACKER Track crime and safety in your neighborhood