Port Blair, April 3 -- A US national was arrested in Andaman and Nicobar Islands for allegedly entering the prohibited tribal reserve area of the North Sentinel Island, police said on Wednesday.

Mykhailo Viktorovych Polyakov (24), arrested by the CID on March 31, had allegedly entered the North Sentinel Island without any authorisation, they said.

He arrived in Port Blair on March 26 and ventured to North Sentinel Island from the Kurma Dera beach, they said.

He launched his boat from Kurma Dera beach around 1 am on March 29, carrying a coconut and a can of cola as "offerings for the Sentinelese", police said.

Polyakov reached the northeastern shore of North Sentinel Island by 10 am. Using binoculars, he surveyed the area but saw no in...