The remains of six people have been found after a helicopter heading to one of the most rugged and remote coastlines in Hawaii crashed at the top of a mountain on the island of Kauai, authorities said.

Officials said that there are no indications of survivors and that a search for the last person yet to be recovered would resume in the morning. Those who were recovered have not been identified and their families are being notified, authorities said. Two passengers are believed to be minors, the Coast Guard said.

A search began for the helicopter carrying a pilot and six passengers from two families after it was reported overdue Na Pali Coast on Kauai, known as “Jurassic Park island”.

An aircraft from Safari Helicopters went missing at about 6pm on Thursday (4am GMT on Friday).

"The last contact with the helicopter was made at approximately 4.40pm, when the pilot relayed that the tour was leaving the Waimea Canyon area," the statement said.