UPDATE: (CBS NEWS)

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 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.

ORIGINAL: GOP presidential candidate Ben Carson has suspended campaigning Tuesday following a serious crash in Iowa involving some of his campaign workers.

“Earlier today in Iowa, a van transporting three campaign volunteers and a Carson campaign employee hit a patch of ice and flipped on its side where it was struck by another vehicle. Three of the passengers, including the campaign staffer driving, are currently being checked out at Cass County Memorial Hospital in Atlantic, Iowa. One volunteer is being transported to the trauma center at the University of Nebraska Medical Center in Omaha, Nebraska,” reads a statementfrom the campaign.

Names and conditions of those involved have not yet been released.

Carson will be flying to Omaha to be with staff member’s family, the campaign said.

Roads in the area around Atlantic are already completely snow covered as a storm system pushes through Iowa.  Earlier snow totals showed more than 2.5 inches of snow in the area.