An investigation is under way into what gardaí believe was a petrol bomb attack on a house in Co Louth last night.

The incident happened at a house on Scarlet Street in Drogheda at around 8.40pm.

A man, aged in his 30s, who was in the house at the time of the incident was uninjured.

However, considerable damage was caused to the front sitting room.

The scene has been preserved for a technical examination.