Passing through Zemun, one part of the army crossed Varaždin and struck Egar before proceeding towards Vienna. Nikola Šubić Zrinski (Miklós Zrínyi) had defeated the "sanjakbey" Tirhal Mohammed, executing him and his son, and capturing 17,000 ducats. This incurred the Sultan's wrath, and he dispatched Sokollu Mehmed's forces to besiege Szigetvár, while Suleiman remained in Harsang. The commander of Buda, Arslan Pasha, lost the cities of Várpalota, Veszprém and Tata. The Sultan sent a platoon of fifteen troopers to bring him Arslan Pasha's head, but Arslan had already left his forces three days earlier and was on his way to the Sultan. The Sultan showed Sokollu Mehmed a letter in which Arslan had insulted him, and on 3 August, when Arslan reported to Mehmed's tent with 15 heavily armed horsemen, Sokollu Mehmed criticized Arslan for his conduct, accused him of treason and stripped him of his post, giving it instead to his nephew Sokollu Mustafa Bey.