CHICAGO (WLS) -- A 43-year-old woman told Chicago police a male suspect came up behind her downtown and hit her in the head earlier this week.

The woman said she was walking in the 600-block of North Rush Street in River North about 6:10 a.m. Monday, when the suspect hit her, causing her to fall down.

ABC7 Chicago is now streaming 24/7. Click here to watch

The suspect then fled east, police said.

The woman declined medical treatment.

CPD said no one is in custody, and Area Three detectives are investigating.

A north suburban woman was knocked out after being randomly punched downtown Chicago in August.

This is a developing story; check back with ABC7 Chicago for updates.

INTERACTIVE SAFETY TRACKER | Track crime and safety in your neighborhood

See Full Page