Explosions caused two bridges to collapse and derailed two trains in western Russia, officials said, without saying what had caused the blasts. In one of the incidents, seven people were killed and dozens were injured.

Two bridges have collapsed overnight in separate incidents in Russian regions bordering Ukraine, killing at least seven people and injuring dozens more. Footage from Reuters shows the aftermath after a road bridge came down in Bryansk, bringing several heavy trucks on to a moving passenger train late on Saturday, the regional governor said.

Hours later came a report of another bridge collapse, also in western Russia, involving a freight train. A bridge overpass in western Russia collapsed late Saturday, derailing a passenger train underneath and killing at least seven people and injuring dozens, officials and the state news media said.