Officials said at least seven people were killed and 30 injured.
The bridge in Russia’s Bryansk region, which borders Ukraine, was damaged “as a result of illegal interference in transport operations,” Moscow Railways said in a statement, without elaborating.
Russia’s federal road transportation agency, Rosavtodor, said the destroyed bridge passed above the railway tracks where the train was traveling.
Photos posted by government agencies from the scene appeared to show passenger cars from the train ripped apart and lying amid fallen concrete from the collapsed bridge.
Other footage on social media appeared to be taken from inside vehicles which narrowly avoided driving onto the bridge before it collapsed.
Bryansk regional Governor Alexander Bogomaz said emergency services and government officials were working at the scene.
He said seven people died and two children were among the 30 injured.
“Everything is being done to provide all necessary assistance to the victims.”
