Social media influencers pose a “new and increasing threat” for uncontacted indigenous people, a charity has warned after the arrest of a US tourist who travelled to a restricted Indian Ocean island.

Mykhailo Viktorovych Polyakov, 24, allegedly landed on North Sentinel Island in an apparent attempt to make contact with the isolated Sentinelese tribe, filming his visit and leaving a can of coke and a coconut on the shore.

Survival International, a group that advocates for the rights of tribal people, said the alleged act endangered the man’s own life and the lives of the tribe, calling it “deeply disturbing”.

The US said it was aware and “monitoring the situation”.

Andaman and Nicobar Islands’ police chief HGS Dhaliwal told news agency AFP that “an American citizen” had been presented before the local court and was remanded for three days for “further interrogation”.

AFP, citing Mr Dhaliwal, said Mr Polyakov blew a whistle off the shore of the island in a bid to attract the attention of the tribe for about an hour.

He then landed for about five minutes, leaving his offerings, collecting samples and recording a video.

The police chief told AFP: “A review of his GoPro camera footage showed his entry and landing into the restricted North Sentinel Island.”

It is illegal for foreigners or Indians to travel within 5km (three miles) of the islands in order to protect the people living there.

According to police, Mr Polyakov has visited the region twice before - including using an inflatable kayak in October last year before he was stopped by hotel staff.