Gardaí have stated that they are anxious to identify and speak to the men involved in an incident on the M4.
The incident involved a number of men and two cars parked in the layby just before junction 12 on yesterday evening.
The cars involved have been described as a dark blue/grey Skoda, and a black Opel Costa or Citroen.
Gardaí are appealing to anyone with information or dash-cam footage who was driving near junction 12 on the M4 between 6:45pm and 7:15pm.