A 19-year-old man was found dead with suspicious injuries to his body inside his Staten Island home Tuesday morning — in a disturbing case investigators are treating as a suspected homicide, sources told The Post.

Police were called to a New Springville residence on Elmwood Park Drive at 11:10 a.m. for reports of an unconscious person. 

Officers arrived to find the teen unresponsive in the home’s living room, cops and sources said. He was declared dead at the scene, according to the NYPD.

The victim’s body was cold and had protruding ribs. He also had swelling and bruising around his wrists and ankles — as well as signs consistent with malnourishment, sources familiar with the investigation said.

The teen’s mother, who placed the 911 call, provided first responders with a narrative that sources said was inconsistent with the physical findings at the scene. 

The investigation into his death remains ongoing. There have been no arrests.