CHICAGO (STMW) — A man was arrested for allegedly sexually assaulting a man in a downtown park Wednesday night.

The sexual assault occurred at 10:30 p.m. in the 400 block of South Wacker Drive, police said.

A man in his 20s was taken in good condition to Rush University Medical Center, police said.

A suspect is in custody but no charges have been filed.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2013. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)