State and local police are investigating the death of an 86-year-old Presque Isle man who was found in his home Saturday.

The body of Leo Corriveau was discovered by relatives at his home on Houlton Road late Saturday afternoon. He lived alone in the mobile home.

An autopsy at the State Medical Examiner’s Office in Augusta determined Corriveau’s death was a homicide, but police are not releasing the cause of death, according to State Police.

State Police and evidence technicians spent most of Sunday at Corriveau’s home gathering evidence and are back on the scene Monday, according to police.