Cook County Crime Stoppers is offering a reward for information after a man was found dead with a puncture wound to his body in downtown Chicago on Sunday morning.

Around 7:21 a.m., the man was found unresponsive in the 200 block of South Wabash Avenue, between Adams Street and Jackson Boulevard, near the Exchequer Restaurant and Pub, with a puncture wound to his body, police said.

Crime Stoppers said that the victim was a homeless man, based on personal effects found at the scene, who died from an apparent stab wound in his upper back. 

The man was taken to Northwestern Memorial Hospital, where he was pronounced dead, police said.

"This is a senseless loss of life," said Paul Rutherford, Executive Director of Cook County Crime Stoppers. "We are deeply committed to supporting law enforcement and the community in bringing justice for this individual."     

No one is in custody. Detectives were investigating the circumstances of the incident, which police listed as a homicide.

Crime Stoppers is offering a reward of up to $10,000 for information leading to the arrest of the suspect or suspects involved. 

Anyone with information is asked to call 1-800-535-STOP (7867) or provide information online at www.CPDTIP.com.