A house in Doorley Park in Sligo has been extensively damaged following an arson attack.

A number of people are believed to have broken a window and set the house alight from inside at around 7am this morning.

There were two adults and three children in the house at the time, but all managed to escape without injury when the alarm was raised. Two units of Sligo Fire Service attended the scene.

A spokesperson said gardaí are very concerned and are treating the matter very seriously. 

Officers conducted house-to-house inquiries in the area today.