A joint investigation in 2023 resulted in the arrest of the head of Ukraine's Supreme Court, Vsevolod Kniaziev, in connection with a $3m (£2.4m; €2.9m) bribe.

Four Ukrainians have been detained in an investigation of "large-scale" government corruption, including a parliament member, two anti-corruption agencies said.

The officials involved — including a member of Ukraine's parliament —allegedly appropriated funds intended for the procurement of drones and electronic warfare (EW) equipment.