At least seven people were killed and 420 injured Monday after another aftershock rocked Turkey -- the strongest since the Aug. 17 earthquake that killed more than 15,000 people.
Rescuers today said they heard voices overnight at one site in Golcuk but later stopped searching, saying there was no one to find.
At another site, where a damaged building slid into the sea during Monday's tremor, the search for possible survivors became a search for the dead.
Divers were searching the building debris underwater to retrieve the bodies of four people who reportedly had gone into the building to salvage belongings when the temblor hit.
Monday's aftershock had a magnitude of 5.8 and was centered on Izmit, 50 miles southeast of Istanbul, the city's Kandilli Observatory reported.
Thousands of people in the area had already lost their homes in the August quake, one factor that may have limited casualties during Monday's aftershock.