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.

Russian authorities said explosions led to the collapse of two bridges in Bryansk and Kursk, resulting in fatal train derailments.

A bridge collapsed in Russia's Kursk region while a freight train was passing over it, the acting governor of the Russian region bordering Ukraine said on the Telegram messaging app.