Two police officers were injured when their vehicle was rammed in Crossmaglen on Sunday.
The PSNI are appealing for information about a red Hyundai officers believe was involved in the incident shortly after 9pm.
Inspector Adam Corner, of the neighbourhood policing team, said neighbourhood officers conducting a patrol attempted to stop a car acting suspiciously in the Cullaville Road area.
"The vehicle, a red Hyundai i20, failed to stop before driving into the police vehicle at speed. The male driver then made off on foot," Inspector Corner said.
"As a result the two officers received injuries. One of our officers was unable to continue their duties and has attended hospital for medical treatment to a back injury. The patrol vehicle sustained damage which will render it unusable for the foreseeable (future).
“This type of reckless and cowardly behaviour places members of the public and our officers at risk of serious harm and we are lucky not to be dealing with more serious injuries.
“I am appealing to anyone who may have seen red Hyundai i20 in the area, or who may have any information as to the driver or dash-cam footage that could assist with enquiries."