The man pulled out of the Charles River this morning was believed to be from Boston, not Cambridge, according to the Suffolk County District Attorney’s Office.

The man was pulled from the Boston side of the Charles River and tentatively identified as a 36-year-old man whose last confirmed address was in Boston, said the office’s Jake Wark.

There will be an autopsy in hopes of finding the cause and manner of his death, Wark said.

State Police got a call for a possible body in the water at about 9 a.m. and recovered the remains from just east of the second span of the Longfellow Bridge. Troop H detectives and detectives assigned to the Suffolk County State Police Detective Unit responded, since the unit has jurisdiction over death investigations in state waterways such as this one, he said.