MONESSEN, Pa. — (WPXI) – The doors to the 6 Deuce Fit gym are boarded up, and the fire tape was still up Wednesday after a fire tore through the gym late Sunday night in Monessen. Investigators say they are looking into this fire as suspicious. The fire department posted on Facebook and said crews took an offensive attack against the fire, and one of the firefighters was taken to the hospital for evaluation. Monessen’s Mayor confirmed to Channel 11 the fire is being investigated as suspicious, and that the state fire marshal’s office has been called to assist in the investigation. Neighbors said the gym has been a bright spot for their community, and they’re sad someone may have started this fire.