Authorities pulled an unidentified adult man's body from the Raritan River near the Rutgers boat docks and Route 18 bridge on Thursday afternoon.
Around 12:14 p.m., the Highland Park Police Department (HPPD) received a report from a kayaker notifying police of what appeared to be a body floating near the docks.
The New Brunswick Fire Department (NBFD) launched a marine unit around 12:24 p.m., while the HPPD, NBFD and New Brunswick Police Department (NBPD) searched the shoreline.
A preliminary investigation did not show any sign of foul play, NBPD Capt. Joseph Miller said in a statement.
"A final determination will not be made until an autopsy is complete," the statement reads.
The investigation is open and pending, said NBFD Capt. Donald Whitlock. The NBPD and prosecutor's office are notifying the unidentified man's next of kin.
"The New Brunswick Police Department with the County Prosecutor's Office are still investigating," he said.