Authorities say an Arizona Department of Public Safety trooper has been seriously injured in a car crash on Interstate 17 in the Flagstaff area.
A DPS box truck delivering food to the agency's canine units was struck from behind by another vehicle and rolled on its side about 10 a.m. Thursday.
DPS officials say the trooper was taken to a Flagstaff hospital with serious but non-life threatening injuries while a sergeant in the truck suffered superficial injuries.
DPS officials say the 19-year-old driver of vehicle that struck the box truck wasn't injured, but was taken into custody.
They say Van Rothermel of Tempe has been booked into the Coconino County Jail on suspicion of DUI, aggravated assault, endangerment and drug possession.
It's unclear if Rothermel has an attorney yet.