Republican presidential candidate Ben Carson has cancelled his scheduled events after four campaign workers were injured in a car accident in western Iowa.
Campaign spokesman Jason Osborne says the crash happened Tuesday morning when the van carrying three volunteers and a paid staffer flipped onto its side on an icy road and was hit by another vehicle.
The Iowa State Patrol was investigating the Cass County crash but didn't have details.
Osborne says a male volunteer with the worst injuries was taken to a hospital in Omaha, Neb.
The others were treated at a hospital in Atlantic, Iowa, and will be released later Tuesday.
Carson, who was in South Carolina, has suspended campaign events and plans to fly to Omaha to meet with the injured volunteer.
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