He was spotted by fans with fake blood dripping down his face.
Laois's Robert Sheehan is currently filming a Blindboy TV adaptation.
The actor was spotted dragging an American-style fridge along Henry Street in Limerick, with fake blood dripping down his face.
While on a break from filming 'Did You Hear About Erskine Fogarty?', he attended a Halloween event.
According to a fan page on social media, Mr Sheehan was happy to chat and take photos with fans.