A man was found dead in an alley Saturday morning in the Washington Park neighborhood on the South Side.

Officers responding to reports of a person down about 9:45 a.m. found the 53-year-old unresponsive on the ground in an alley in the 5800 block of South Wabash, according to Chicago Police.

He was pronounced dead at the scene at 9:57 a.m., according to the Cook County medical examiner’s office. An autopsy Sunday did not rule on the man’s cause and manner of death, with results pending further studies.

Police said there were no apparent signs of trauma on the man’s body. Area Central detectives are conducting a death investigation.