Around noon of 12 February,
Duke Leopold of Austria, returning from a pleasure ride with few companions, was passing the Torriani quarter on his way back to his camp outside of Porta Comasina, northwest of the city, when he heard unusual noise of voices, weapons and horses, and through an open door he could see a congregation of men in full armour. Leopold sent his men back to his camp with the command to arm his followers, and went to king Henry, who was residing in the city palace, to warn him of the impending attack. Henry sent his brother
Baldwin to fetch the German troops camped outside
Porta Romana, southwest of the city, while a group of knights led by
Henry of Flandres and John of Calcea rode to the Visconti palace and from there to the Torriani quarter, where they were immediately engaged in heavy combat. Henry remained in the palace, and ordered the palace gates to be barricaded, just in time before the arrival of an armed mob. At the same time, the contingent of
Teutonic Knights arrived, and in a single charge killed or dispersed most of the rebels. The German chronicles are unanimous in praising the bravery and valour of the knights in this attack, and especially their leader, the
commander of Franconia and later
Deutschmeister Konrad von Gundelfingen. The Austrian reinforcements had been delayed by barricades erected by the rebels at Porta Comasina. The Visconti reinforcement likewise arrived suspiciously late, in what was afterwards taken to imply at least passive support of the uprising. When the reinforcements arrived in the Torriani quarter, the fight there was mostly over. The soldiers now went on to loot the Torriani residences in a massacre that continued until nightfall. ==Aftermath==