The body of the US missionary killed on the remote North Sentinel Island in the Indian Ocean is yet to be recovered.

John Chau was killed by the ancient Sentinelese tribe while attempting to convert the hunger-gatherer tribe to Christianity.

Calls are mounting for Indian authorities to abandon efforts to recover Mr Chau’s body as activist groups argue for the tribe to be left alone.

Survival International, a group seeking to protect the rights of tribal peoples, said Indian authorities should call of the rescue operation as it is “incredibly dangerous” for all involved.