Four people were killed on Friday evening after a helicopter crashed in the North Sea off Scotland. The other 14 people that were on the vehicle were rescued after the crash occurred around Scotland's Shetland islands. They've been taken to a local hospital, and none of them have suffered serious injuries.

"Our sympathies are very much with the families of those affected at this difficult time," said Malcolm Graham, the assistant chief constable of Police Scotland. "All families have been informed and specially-trained family liaison officers are currently providing them with support."

Three bodies have been found, while a fourth is still being searched for, according to Police in Scotland. Sophie Turner, a spokeswoman for the United Kingdom's Maritime and Coastguard Agency, said that most of the passengers work on the Borstein Dolphin oil and rig platform.

Turner also added that while authorities haven't come up with a cause for the crash, it was misty and foggy in the area of the crash on Friday night. 

"There appears to have been a catastrophic loss of power which meant the helicopter suddenly dropped into the sea without any opportunity to make a controlled landing," rescue coordinator Jim Nicholson told the AP. 

The helicopter that crashed was a Super Puma , and according to ITV News, it was the fifth incident in four years involving a similar model. The manufacturer of the Super Puma is Eurocopter, and the helicopters have a twin-engine and a large cabin.

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