The incident left a man seriously injured in Mullingar early on Saturday morning.
Gardaí are renewing their call for witnesses following an apparent assault on a man in Westmeath over the weekend.
The incident, which took place at around 1:10am on Saturday morning on Grove Street, left a man in his 30s with serious injuries.
He was subsequently brought to Midlands Regional Hospital in Mullingar for treatment.
An incident room has been set up at Mullingar Garda Station as gardaí continue their enquiries.
Anyone who may have camera or dashcam footage, or may have been present in the areas around Grove Street and Mullingar Town centre between 12:30am and 1:30am is being asked to contact Mullingar Garda Station.