Chicago police are looking for a nonverbal man who may need medical care.

Police said Duane Williams, 50, has been missing from the 2500 block of South Washtenaw Avenue since April 20.

Williams, police said, may be in need of medical attention. He is nonverbal, but will answer to his name, according to police.

The missing man is black, 5 feet 9, 130 pounds, with brown eyes, a bald head and medium brown complexion. He was last seen wearing a gray sweatshirt, blue jeans and black boots.

If you locate him, call 911 and the Area Central Special Victims Unit at 312-747-8380.