The Coast Guard has suspended search operations for what may - or may not have been - missing boaters in Jamaica Bay, officials said.
The search, which began at 10 a.m. Thursday, was abandoned at about 6 p.m.
It remains unclear, however, if initial reports about boaters in the water were accurate.
Petty Officer 3rd Class Barbara L. Patton said the Coast Guard checked with local authorities and said no missing persons reports seem to correspond to the reported incident.
She also said that while two capsized boats were found in the bay, one was determined to be a derelict and the origin of the other remains unclear.
The first boat, which was blue and white, had marine growth on it, indicating it had been capsized in the water for quite some time.
The second boat, a green-and-white, 10-foot pram, gave no indications as to whether people had been on board - or if it too was a derelict.
"There was no motor, no oars, no other debris in the water," Patton said.
The initial 911 call about a capsized boat in the bay was placed by students at nearby Beach Channel High School at about 10 a.m. The school is not far from the entrance to the Cross Bay Bridge.
At the time of the incident, Patton said the water temperature was about 40 degrees.
She said the survivability window lasted until about 1:30 p.m. Thursday. She said the search continued until 6 p.m., however, because the Coast Guard never uses a set deadline to determine search parameters.
It was unclear Friday if the FDNY and the NYPD, which were also involved in the search, now are considering the validity of the original 911 call.
The NYPD said the investigation remains ongoing - and a spokesman would not say whether detectives were attempting to determine the possibility the entire episode was a hoax.