A southbound lane of Interstate-17 was closed for most Thursday after a collision between a box truck and a minivan scattered bags of dog food along the median.

Two Arizona Department of Public Safety officers were injured in the rear-end collision. According to DPS, at around 10 a.m., a DPS sergeant and trooper were driving a box truck with dog food for the department’s K-9 units on I-17 when they were rear-ended by a minivan. The force of the accident caused the truck to roll on its side, ripping it open and spilling bags of dog food along the median.

The sergeant received superficial injuries and the trooper had serious, but not life-threatening, injuries. Both officers were taken by ground ambulance to Flagstaff Medical Center. The driver of the van was not injured.

DPS Media Specialist Bart Graves said the department was able to salvage about two-thirds of the dog food.

The driver of the minivan that struck the DPS truck was arrested and booked into the Coconino County Jail. Van R. Rothermel, 19, of Tempe has been arrested on suspicion of driving under the influence, two counts of aggravated assault, endangerment and possession of drugs.