The incident happened on Monday night at Corraskea in Ballybay, Co. Monaghan.
Gardaí are appealing for witnesses to a crash in Monaghan that hospitalised six people.
It happened at around 9.30pm on Monday night at Corraskea in Ballybay.
The six people who were injured and taken to Cavan General Hospital suffered non-life threatening injuries.
Yesterday, the Garda Síochana Ombudsman Commission said it was investigating the incident, and was appealing for witnesses.
In particular it is looking to speak to anyone who saw a silver 2005 Volkswagen Passat with a blue rear right-door.
Collision investigators have carried out a technical examination of the scene.
Gardaí are asking anyone with information to contact them.