A 61-year-old man was found dead inside his apartment at a Queens public housing building — bleeding from the mouth with a hammer lying next to him, cops and police sources said. 

The man, whose name was not immediately released, was discovered inside NYCHA’s Ravenswood Houses unit on 35th Avenue near 21st Street in Astoria when cops responded to a 911 call around 6:50 p.m. Tuesday, authorities said. 

He was lying on the floort, with blood coming from his mouth. There were no other signs of trauma.

He was pronounced dead by EMS. 

The NYPD could not provide any further details about the circumstances of the man’s death early Monday. 

The city Medical Examiner’s Office will make an official ruling, police said.