 Sigismund I demanded extradition of Michael Glinski for trial, while Vasili III demanded better treatment of his widowed sister Helena.Vasili also discovered that Sigismund was paying Khan Meñli I Giray to attack the Grand Duchy of Moscow.At the same time, Albert of Prussia became the Grand Master of the Teutonic Knights and was unwilling to acknowledge Poland's suzerainty as required by the Second Peace of Thorn (1466).