When no follow-up message arrived it appeared that McGregors claim could well be genuine, and White later said McGregor had been pulled from UFC 200 his keenly anticipated rematch with Diaz because of a reluctance to promote the fight.
A story on UFCs official website said: McGregor informed UFC officials that he would not participate in any promotional activities, including a commercial shoot and press conferences.
McGregor signed for the rematch with Diaz last month in the wake of his shock defeat on 5 March his first loss in the UFC when he was choked into submission.
Diaz did not appear to take McGregors Tweet seriously, writing: I guess my work here is done, Im retiring too although that was sent before Whites statement.
Muay Thai is a combat sport of Thailand that uses stand-up striking along with various clinching techniques. This physical and mental discipline which includes combat on shins is known as "the art of eight limbs" because it is characterized by the combined use of fists, elbows, knees, shins, being associated with a good physical preparation that makes a full-contact fighter very efficient. Muay Thai became widespread internationally in the twentieth century, when practitioners defeated notable practitioners of other martial arts.