After Alexander's death in August 1506, Zabrzeziński accused Glinski of high treason and of poisoning Alexander. As the new King Sigismund I the Old did not clear his name, Glinski ordered Zabrzeziński killed in his residence near Hrodna in February 1508. This event is considered the beginning of Glinski's revolt against Sigismund I, which became part of the Muscovite–Lithuanian Wars.