The bodies of four women were found Monday in a ditch behind a motel, not far from the Atlantic City Visitors Welcome Center, authorities said.
The bodies were found face down in several inches of water, said Janet Niedosik, a spokeswoman for the Atlantic County prosecutor's office.
One body was discovered by two women walking on a path, and police found the other three, Niedosik said.
The bodies were "some distance apart from each other," Atlantic County Prosecutor Jeffrey Blitz said.
Autopsies were scheduled for Tuesday.
The bodies were found in Egg Harbor Township, less than 200 yards from a welcome center on the edge of Atlantic City.
Onlookers said the area around the motels is known for drugs and prostitution.
"You don't stay here unless you're doing something wrong," said Danielle Trombetta, 16, of Egg Harbor Township.