Seven people are dead and several more were critically injured when authorities say a sand or dust storm caused visibility issues that led to a series of crashes involving 20 vehicles in Utah Sunday evening.
The crashes happened on I-15 near Kanosh, the Utah Department of Public Service (DPS) said in a news release.
Several people were transported to local hospitals in critical condition, officials said. Authorities did not specify how many people were injured but noted there could be more fatalities.