 A bridge in Montana collapsed into the Yellowstone River early on June 24, landing multiple railcars in the water, officials said. Montana Rail Link, the company operating the train, said in a statement that several hazmat cars plunged into the river. No injuries were reported among the train crew, it added footage from the site of the derailment recorded on June 25 showed officials and crews at site as well as the tanks inside the river. The railcars were carrying asphalt and molten sulfur substances that quickly solidify when they come in contact with cooler temperatures, the company said. Two cars transporting sodium hygrosulfate and acid salt did not enter the water and initial air quality assessments indicate the chemical was not released from the cars, Montana Rail Link said. Multiple local, state and federal agencies were coordinating the response and working to determine what caused the derailment. Police were unsure what happened first, the derailment or bridge collapse, local media reported.