Five Cambodian fishermen have been arrested for a brutal attack on a group of French tourists in which two women were raped at knifepoint on an isolated Thai beach, police said Monday, according to AFP.

It is the latest high profile assault on foreign visitors in Thailand, a country that is hugely reliant on its lucrative tourist trade.

Investigators said four French holidaymakers were attacked late Saturday on Koh Kut (also known as Koh Kood), an underdeveloped island close to Cambodia's western border with Thailand.

Police said the attackers allegedly swam from their fishing boat to assault the group.