On the feast day of Saint Matthias (February 25), this large force attacked Pilėnai, located in Trapėnai land, where some 4,000 people from four different lands sought shelter from the invasion. Wigand's description of further events paints a chaotic and bloody scene. He claims that the people panicked as soon as they saw the Christian army and decided to burn their belongings and commit suicide. It was said that one old woman killed a hundred people with an ax before killing herself. Others managed to escape on horseback. Duke Margiris attempted to organize defense, but soon was overwhelmed by the attackers who threw burning wood and stones into the fortress. Margiris then cut his wife with a sword, threw her body into the fire, and killed his loyal guards and followers. Thus, Pilėnai fell and the Order collected the remaining prisoners and loot. "Kurze Reimchronik von Preussen" mentioned that 5,000 people were killed and only a handful escaped.