Apparent flare sightings have launched search efforts in the Connecticut River, the U.S.Coast Guard for the Long Island Sound said.
Reports of a flare signting came in at 8:55 p.m., the Coast Guard said.
A search is being conducted in the North Cove and Hamberg Cove area along the Connecticut River.
DEEP, Essex Fire, Old Saybrook Fire, Coast Guard's New London station and Westbook Fire are all on the scene conducting a search.
There have been no reports of any distress boaters or missing person reports, the Coast Guard said.