A former soldier who knocked down four women in an Army barracks in the early hours of Sunday morning was not breathalysed because military police have no capacity to breathalyse motorists.
Gardaí who arrived at the scene did not have the power to investigate the crash.
The former soldier was at a function in a bar in McKee barracks, Blackhorse Avenue, Dublin, on Saturday night. As he drove his car from the car park at around 1.30am on Sunday he knocked down four women who were leaving the same function on foot.
One of the women suffered a fractured jaw. Another sustained a broken leg. A third woman broke a number of ribs and sustained head injuries while the fourth had cuts and bruises.
All four were taken by ambulance to the Mater hospital. Three have since been discharged while the fourth remained in the Mater last night. Her condition is not believed to be life-threatening.
Military police at the barracks have begun an investigation. They invited gardaí to carry out their own inquiries.
However, when gardaí arrived at the scene at around 2am they told the military police they could not join the investigation because they did not have jurisdiction in a military barracks.
They returned to their station to check this and later returned to the barracks reiterating their belief that they could not investigate the crash.
Because the military police have no capacity to breathalyse suspected drink-drivers, the driver was not tested. The incident was captured on CCTV.
A Garda spokeswoman confirmed the gardaí had no jurisdiction.