Three people died and another 50 were injured when an Amtrak train derailed after hitting a dump truck in Missouri, authorities said. Cpl. Justin Dunn, a spokesperson for Missouri State Highway Patrol Troop B, told reporters that two of the people who were killed were aboard the train while the third was in a dump truck that the train struck. Amtrak said the train collided with the dump truck at a public crossing near the city of Mendon. Authorities said the incident happened at an intersection that did not have warning lights or motion gates. A gravel road crosses the railroad tracks southwest of town at that intersection. Eight cars and two locomotives left the track, “after striking a truck that was obstructing a public crossing near Mendon, Missouri,” company officials said in a statement. The train was en route to Chicago. “Saddened by the tragic loss of life and injuries in the Missouri train derailment today & Northern California collision over the weekend,” Pete Buttigieg, U. S. secretary of transportation, tweeted. Federal Railroad Administration staff and the NTSB will be on site to investigate. It was the second train accident in two days in which an Amtrak train hit a passenger vehicle.