Investigators are trying to determine the cause of death of a man found unresponsive early Thursday morning in a wooded area of Riverhead.

Riverhead Town police said a 911 call at 6:58 a.m. reported “an unconscious male” in an area north of West Main Street, and that responding members of the Riverhead Volunteer Ambulance Corps determined the victim was deceased.

Police said the death appears to be “noncriminal,” but also said it appears unrelated to recent frigid overnight low temperatures that had hit Long Island.

An autopsy by the Suffolk County Medical Examiner's office will determine the cause of death.

Police have not released the identity of the victim, pending notification of next of kin.

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Newsday Live presents a special evening of music and conversation with local singers who grabbed the national spotlight on shows like "The Voice," "America's Got Talent,""The X-Factor" and "American Idol." Newsday Senior Lifestyle Host Elisa DiStefano leads a discussion and audience Q&A as the singers discuss their TV experiences, careers and perform original songs.

Newsday Live Music Series: Long Island Idols Newsday Live presents a special evening of music and conversation with local singers who grabbed the national spotlight on shows like "The Voice," "America's Got Talent,""The X-Factor" and "American Idol." Newsday Senior Lifestyle Host Elisa DiStefano leads a discussion and audience Q&A as the singers discuss their TV experiences, careers and perform original songs.

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