(Fairfield Township)---The Ohio Fire Marshal's Office is assisting Fairfield Township firefighters in looking for the cause of an early morning fire Monday at an office/industrial complex on North Gilmore Road. Witnesses reported hearing explosions when they called police and fire dispatchers just after 4:00am Monday morning. First responders reported heavy smoke and flames when they arrived on the scene. Fairfield Township received mutual aid from Hamilton City, Monroe, Liberty and West Chester Townships. Several vehicles inside the garage area were destroyed, and the inside of the unit was gutted. There were no injuries.