LONDON, Jan 7 (Reuters) - Four people were feared dead after a helicopter crashed in eastern England on Tuesday, police said, with local media reporting that it was believed to be a U.S. military aircraft.
The crash occurred in the Cley area of the north Norfolk coast, police said in a statement.
"There are believed to be four fatalities," the statement added, saying a 400 metre (0.25 mile) area had been cordoned off.
Sky News, citing sources, said the helicopter was believed to be a U.S. Black Hawk flying from the nearby U.S. airbase RAF Lakenheath.
"We are working on an incident," a spokesman at the airbase said, adding he had no further details. (Reporting by Michael Holden; Editing by Mike Collett-White)