Several people have been found dead after a helicopter carrying at least 13 people crashed off the west coast of Norway, near the city of Bergen. Eleven people have been found dead, the Aftenbladet newspaper reports. A British national, an Italian and 11 Norwegians were reportedly on board the helicopter when it crashed. Police spokesman Morten Kronen said the helicopter had "crashed, it is totally smashed". There were "reports of an explosion and thick smoke" and people in the sea, he added. However, rescue officials told broadcaster NRK there was no sign of any survivors. Images on Norwegian media showed huge billows of smoke on the island of Turoey The helicopter, a Eurocopter 225, was transporting workers from the Gullfaks north sea oil platform to Bergen. Statoil, the company that owns the platform, have temporarily grounded all Eurocopter 225 helicopters. Norwegian Prime Minister Erna Solberg wrote on Twitter about the "horrifying reports" and said she was being kept informed about the rescue work.