Bangkok (Web Desk): At least six soldiers were killed as a bomb planted in a dirt road exploded in Southern Thailand on Monday.

It was apparently an attack by Muslim separatists in an insurgency that has cost more than 6,500 lives since 2004.

According to details, police Major Pompetch Chotiklang, the explosion in Pattani province also wounded four other soldiers and blew the truck they were travelling in into pieces, with parts of it landing 100 meters (yards) away.

The separatists are mostly active in Thailand 's three southernmost provinces of Pattani, Narathiwat and Yala, the only ones with Muslim majorities in the Buddhist-dominated country.

There is usually an upsurge in attacks during the Muslim Holy Month of Ramazan, which this year began on May 26 and ends on June 24 in Thailand , Police say.