 An official inquiry found the murders might have been prevented if an intelligence tip-off had been acted on. A top Russian army officer has been placed in pre-trial detention following allegations of large-scale fraud. Artyom Gorodilov was arrested by military counterintelligence in the city of Ryazan, 200 kilometres southeast of Moscow. Colonel Gorodilov was commander of the regiment blamed for carrying out a massacre of civilians in the occupied town of Bucha.