NEW YORK (AP) — Three swimmers drowned and three were missing Saturday in two days of treacherous ocean currents at Long Island and New York City beaches, authorities said. At least three more had been rescued.

The missing included a 10-year-old girl who had been playing in the waters off Coney Island. A 10-year-old boy who was with her was rescued, police said.

Some authorities said the spate of swimmers being swept away seemed unprecedented. In the Long Island community of Long Beach, where two people drowned and another disappeared, Police Lt. Bruce Meyer said he "cannot recall there ever being back-to-back situations like this."

The rough seas were due to a strong storm system that brought 8-foot waves to the area earlier this week, National Weather Service meteorologist Jim Connolly said.