Emergency services have arrived at the scene of a two-vehicle collision on the N7 in Kildare.
The crash occurred at around 4.45pm at Junction 8 near Johnstown on the inbound road to Dublin, according to The Irish Mirror.
A #Garda car has overturned after being involved in a motor collision on the N7 this afternoon..Let's hope all well with officers..
— Padraig O'Reilly Photographer (@padraig_reilly) December 28, 2017
It is understood that Gardaí were pursuing one of the vehicles involved in the collision.
One person has reportedly been rushed to hospital where his condition has been described as critical.
Three teenagers were arrested at the scene.
A Garda spokesperson said: "This matter has now been referred to the Garda Siochana Ombudsman Commission."
Dublin Fire Brigade and Tallaght Ambulance have shared photos of the incident on Twitter.
— Dublin Fire Brigade (@DubFireBrigade) December 28, 2017
— Tallaght Ambulance (@TallaghtAmbo) December 28, 2017