A blaze that ripped through a Nepean Street rooming house over the weekend was not caused by a Molotov cocktail, say fire investigators.

Although the cause of the fire remains unknown, investigators have determined that the fire was not started by an accelerant.

The fire, which burned out a home at 230 Nepean Street late Saturday night, caused more than $100,000 in damage. Nobody was injured in the fire.

Anyone with information about the incident is asked to call Ottawa police at 613-236-1222, ext. 2758 or Crime Stoppers at 613-233-TIPS.