Mahwah police notified the New Jersey State Police and Bergen County Prosecutor's Office after the body turned up -- with a canoe nearby -- near Ramapough Indian land off Halifax Road late in the morning.
He'd apparently been in the water for multiple days and may have been the victim of a boating accident, responders said.
Authorities believe he's from the area.
Township firefighters and a dive team were summoned to retrieve the body for the Bergen County Medical Examiner's Office.
The Bergen County Sheriff's Bureau of Criminal Identification was called to collect evidence.
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