A man in his 70s has been arrested after a petrol bomb was thrown at a pub in Sligo town on Wednesday night.
A fire broke out at Connolly's pub on Holborn Street after the device landed at the pub entrance at around 11pm.
There were customers inside when the fire broke out; however, no injuries have been reported, according to gardaí.
The area remains sealed off on Thursday morning.
Gardaí have said investigations are continuing.