At least five people died after a Friday night pileup on Interstate 90 in Montana, authorities said. At least 20 vehicles crashed and Montana Highway Patrol Sgt. Jay Nelson said authorities believe the weather was a factor. “It looks like there were strong winds, causing a dust storm with zero visibility,” he said. While the highway patrol did not have an immediate count of the number of injuries, Nelson said additional ambulances had to be called from Billings to assist. Gov. Greg Gianforte tweeted: “I am deeply saddened by the news of a mass casualty near Hardin. Please join me in prayer to lift up the victims and their loved ones. We are grateful to our first responders for their service.” The incident happened 3 miles (5 kilometers) west of Hardin around 4:30 p.m.