The first reliable data comes from summer of 1365. While Algirdas and Kęstutis were in Volhynia helping their brother Liubartas in the Galicia–Volhynia Wars, Butautas together with other nobles attempted a "coup d'état". However, the plans were discovered by Dirsūnas, deputy of Vilnius. Butautas was arrested, but his accomplice or brother Survila rescued him and killed Dirsūnas. The coup failed and Butautas, Survila, and fifteen followers had to flee to the Teutonic Knights. Historian S. C. Rowell questioned whether the coup really happened as it is mentioned only in a late German source.