Prosecutor John Bell said Wednesday that authorities are investigating why the driver crashed into a group of 13 cyclists on Tuesday afternoon near McCrory, Ark., about 90 miles northeast of Little Rock.
Bell says there wasn’t any evidence that the driver had been drinking alcohol.
The crash injured seven of the 13 cyclists traveling from Charleston, S.C., to Santa Monica, Calif., as part of a six-week trip organized by a Williamstown, Mass.-based company called Overland.
The company says five of the seven injured cyclists remained hospitalized Wednesday. One was in critical condition.
Overland says the cycling group included 11 high school students and two adult guides.