 But later Zaporozhian Cossack Grigory Potemkin, and apparently without Kalnyshevky's knowledge, reached an agreement to allow a group of 50 Cossacks under the guidance of a starshyna Lyakh to go fishing in the river Ingul next to the Southern Buh in Ottoman territory and to issue 50 passports.The pretext was enough to allow the Russians to let the Cossacks, as 50 passports allowed five thousand Cossacks to leave  (approximately 30% of the Zaporozhian Cossacks).As long as Potemkin could be guilty, so starshyna, including Kalnyshevsky, was arrested for this.