A building fire in Clarksburg is ruled arson, now city authorities are involved.

This isn't the first time it was set on fire, in fact it's the third time the city warehouse on Dane Street had to be put out.

Fire fighters kept the blaze under control yesterday evening.

City Manager Martin Howe says, they were supposed to run through the building this week to inspect, for future demolition bids.

He says, it needs to come down before someone gets hurt.

Fire Inspector Danny Hamrick says, they don't know how or where the fire started, and they may never find out.

If anyone has details call the fire department at 624-1685.