Lviv was invaded by the Mongols in 1261. Various sources relate the events which range from destruction of the castle through to a complete razing of the town. All the sources agree that it was on the orders of the Mongol general Burundai. The Shevchenko Scientific Society ("Naukove tovarystvo im. Shevchenka") informs that the order to raze the city was reduced by Burundai. The Galician-Volhynian chronicle states that in 1261 "Said Buronda to Vasylko: 'Since you are at peace with me then raze all your castles'". Basil Dmytryshyn states that the order was implied to be the fortifications as a whole "If you wish to have peace with me, then destroy fortifications of your towns". According to the "Universal-Lexicon der Gegenwart und Vergangenheit" the town's founder was ordered to destroy the town himself.