Police found a man dead and bound in a Queens apartment, police sources said Sunday.

The 57-year-old was discovered on the sixth floor of an apartment on 79th Street in Jackson Heights at about 7:45 p.m. Saturday, police said. He was found on the floor of a back bedroom.

Emergency Medical Services pronounced the man dead at the scene. The cause of death has not yet been determined.

The man’s name is being withheld pending family notification, and cops said the investigation is ongoing.