A driver crashed into a police vehicle from behind sending both they and the officer to the hospital.
The crash happened around 8:30 a.m. Sunday on I-35 North near Toepperwein.
Police say the driver's car clipped the back of the police unit while the officer blocked traffic at another accident scene.
EMS transported both the officer and the driver to hospitals for minor injuries.
Traffic investigators say both did have seat belts on.
Police closed down the highway for about an hour while investigators worked the crash scene.