 One person died and five were injured when a helicopter crash landed in the ocean off Western Norway, police said. The Sikorsky-S-92 aircraft was on a search and rescue training mission when the accident occurred, officials have said. The helicopter belonged to Bristow-Norway, the company's country manager, Heidi Wolf-Heimerke, told daily Stavanger-Affenblad. Bristow-Norway transports crew to and from oil and gas platforms in the North Sea. The six people on board were hoisted from the sea by rescue workers, but one was later declared dead in hospital, police said in a statement. Haulkland University Hospital, the region's largest, said it had received all six patients from the accident. Investigations are underway after a search and rescue configured Sikorsky-S-92 operated by Bristow Group came down off the coast of Norway. Bristow says the helicopter, which it identifies as LNOIJ, was involved in an accident around west of Bergen. The aircraft is contracted to a civilian customer and was conducting a training mission at the time of the incident, Bristow says. Sikorsky adds, we are aware of the incident and stand ready to support the investigative authorities and our customer. Security is our top priority.