A house was extensively damaged during the incident.
Gardaí are investigating an instance of arson in Westmeath.
Units from Athlone Fire Service attended the scene at Marine View at 9:30 last night and successfully extinuished the blaze.
The property was extensively damaged but nobody was injured during the event.
Gardaí are carrying out a forensic examination and Sergeant Andrew Haran of Athlone Garda Station is appealing for information: