The Mongols invaded again in 1287. Recent research indicates that Mongol armies may not have reached Pagan itself, and that even if they did, the damage they inflicted was probably minimal. But the damage was already done. All the vassal states of Pagan revolted right after the king's death, and went their own way. In the south, Wareru, the man who had seized the governorship of Martaban in 1285, consolidated Mon-speaking regions of Lower Burma, and declared Ramannadesa (Land of the Mon) independent on 30 January 1287. In the west too, Arakan stopped paying tribute. The chronicles report that the eastern territories including trans-Salween states of Keng Hung, Kengtung and Chiang Mai stopped paying tribute although most scholars attribute Pagan's limits to the Salween. At any rate, the 250-year-old Pagan Empire had ceased to exist.