Russian President Vladimir Putin has ordered an official investigation into the cause of the fire on a bridge to Crimea on Saturday, Kremlin spokesperson Dmitry Peskov said, according to the Interfax news agency. Russian anti-terrorism authorities, cited by state news agency TASS, said that a truck had exploded on the road part of the bridge, causing fuel tanks of a train headed to the Crimean peninsula to catch fire. “Two spans of the road bridge partially collapsed,” the statement read.