Last Updated Jan 19, 2016 10:50 PM EST
Neurosurgeon Ben Carson canceled all of the day's remaining campaign events Tuesday after three volunteers and a staffer were involved in a car accident requiring medical care.
On Tuesday evening, Carson's camping confirmed that one of the volunteers, 25-year-old Braden Joplin, had died.
According to a statement released by the campaign, a van transporting the group hit a patch of ice and flipped on its side, where it was struck by another vehicle.
The other three passengers, including the staffer, are being checked out at Cass County Memorial Hospital in Atlantic, Iowa. The campaign says they are alright.
Joplin was a student at Texas Tech University who had been in Iowa volunteering for the Carson for a "significant amount of time," his campaign said.
Carson tweeted a photo of himself and Joplin Tuesday night.
Carson had spoken with Joplin's family as well as his attending physician. Carson was travelling to Omaha this afternoon to be with the family.
"Dr. Carson is asking people to join him in prayer for all the individuals and families involved," the statement said.
Carson had two events in South Carolina that were closed to the press on his schedule Tuesday.
CBS News Digital Political Reporter Kylie Atwood contributed to this story.