It happened on the Donegal to Ballybofey Road at around 3.45am
Gardaí in Donegal are investigating a collision involving a garda car in Letterkenny.
It happened on the Donegal to Ballybofey Road at around 3.45am this morning at Meencargagh, Ballybofey - known locally as McGrorys Brea.
One of the cars involved was a garda car, while the second was a black Fiat Punto car.
Officers from the Garda Síochana Ombudsman Commission (GSOC) attended the scene.
The drivers of both cars were taken to Donegal University Hospital, where their injuries are described as non-life threatening.
The road is currently closed to facilitate a forensic collision examination and local diversions are in place.
Gardaí are appealing for witnesses - in particular anyone who may have been on the Ballybofey to Donegal Road between 3.15am and 3.45am - to contact Letterkenny garda station on 074-916-7100, the Garda Confidential line at 1800-666-111 or any garda station.