They're particularly interested in one vehicle which was involved.
Gardaí are investigating a single vehicle collision in Offaly yesterday.
The incident occurred at Roscore Demense in Blueball at 3.45pm.
The vehicle involved was a silver Hyundai, with 07 WH registration plates.
Anyone who passed the area and saw anything of note or has dashcam footage is asked to contact Tullamore Garda Station.
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