The incident happened in Laois Shopping Centre.
Gardaí say they are following a definite line of inquiry into an assault in the Midlands.
A man in his 30s suffered non life threatening injuries in the incident in Laois Shopping Centre in Portlaoise.
Gardaí are appealing for witnesses and asking anyone who was in the shopping centre between 6pm and 7pm on Monday evening, to contact them.
No Slowing Down With Age As Westmeath Bowlers Shine At 14th Annual National Bowls Competition
Midlands Emergency Services At The Scene Of Fatal Crash
Status Yellow Fog Warning Issued For Leinster, Munster And Galway
Call For More Public Toilets Across The Midlands And Beyond
Nearly 600 Patients Waiting For Hospital Beds Across Ireland
More Action Needed To Tackle Adult Abuse Says Safeguarding Ireland