Maine State Police say the deaths of two men found inside a pickup truck in the Aroostook County town of Castle Hill are being investigated as a double homicide.

Troopers were called to the scene along Route 227 just after midnight. The State Road was closed between Turner and Waddell Roads in Castle Hill early Tuesday morning and is not expected to reopen until afternoon, according to State Police spokesman Steve McCausland.

The identities of the two victims  have not been released. The bodies are being transported to the State Medical Examiner’s Office in Augusta for autopsies, McCausland said. The truck will be towed to the Maine State Police Crime Lab for analysis.

A team of State Police detectives, evidence technicians, and troopers have been assisted by the Aroostook Sheriff’s Office and the Maine Warden Service.

Police are asking anyone who saw any suspicious activity along the State Road late Monday night, or has information, to call the State Police barracks in Houlton at 532-5400.

Castle Hill is about 12 miles west of Presque Isle.