Officials said the explosion caused two bridges to collapse in western Russia. Seven people were killed

Officials said Sunday that the explosion caused the two bridges to collapse and derail in western Russia, without saying what caused the explosion. In one of the incidents, seven people were killed and dozens were injured.
The first bridge in the Bryansk region of the border with Ukraine collapsed on a passenger train on Saturday, causing casualties.
Hours later, officials said the second train derailed when the collapsed bridge in the nearby Kursk region collapsed, which also bordered Ukraine.
Local acting state governor Alexander Khinshtein said Sunday that during that crash, the freight train was thrown from the tracks onto the road below. He said the crash caused a fire, but no casualties were found.
Russia's investigation committee, the country's top criminal investigation agency, said in a statement that the explosion collapsed the two bridges, but did not provide further details.
Photos posted by government agencies at the site in the Bryansk area appear to show the train carriages being torn and lying in the falling concrete on the collapsed bridge. Other footage on social media was apparently taken from internal vehicles on the road, and these footage had avoided driving before the bridge collapsed.
In the past, some officials accused pro-Ukrainian saboteurs of attacking Russia's railway infrastructure. However, the details surrounding such events are limited and cannot be independently verified.
In a statement on Sunday, Ukraine's Ukrainian abbreviation Gur, known for its Ukrainian military intelligence said a Russian military freight train carrying food and fuel was blown up on its way to Crimea. It did not claim that the attack was conducted by Goul, nor did it mention the collapse of the bridge. The statement said Moscow's main “arteries” with the Russian-occupied Zaporizhzhia region and Crimea were destroyed. ”
Since the Moscow invasion in February 2022, Russian troops have been entering the Zaporizhzhia region in eastern Ukraine. They took Crimea and annexed it in 2014.