Four people were injured in Höxter in a rear-end collision with a patrol car.
As the police announced on Wednesday, a woman had stopped to turn left on a street, behind her two cars braked - the patrol car drove into the cars.
Police officers, aged 23 and 24, and two other 38 and 66-year-olds, were injured and rushed to hospital.
Höxter - The police estimate the property damage at around 40,000 euros.
dpa