A man was found dead in a backyard Wednesday morning in the Dunning neighborhood on the Northwest Side.

About 5:45 a.m., the 28-year-old was discovered unresponsive in a backyard in the 4000 block of North Pittsburgh Avenue, according to Chicago Police and the Cook County medical examiner’s office.

He was pronounced dead at the scene, police said.

An autopsy Thursday did not determine the cause of death, pending further investigation, according to the medical examiner’s office.

Area North detectives are investigating.