Both Gardaí in the rammed and severely damaged patrol car, a male and a female, remain in Our Lady of Lourdes Hospital Drogheda.
The investigation into the incident is being coordinated from an incident room at Monaghan Garda Station under the direction of a senior investigating officer.
Anyone with any information or sighting of a dark grey Audi A6, baring northern registration plates in the general vicinity of the R184 between Ballybay and Clontibret or surrounding roads, or any driver in that area between the hours of 11am and 2pm with any dash cam or other video footage is being asked to contact investigating Gardaí.
The Garda investigation team can be contacted at Monaghan Garda Station at 047 77200.