The history of martial arts in Thailand is is not known. When a Burmese army sacked and razed Ayuddhaya to the ground the archives of Thai history were lost, and along with them much of the early history of Thai martial arts. The first great interest in Muay Thai as a sport is documented to have come around the year of 1584 under the rule of King Naresuan. The King himself was well trained in the art of Muay Thai and so were his soldiers. Soon the art spread to the public and new fighting techniques began to evolve.