House fire in Lincoln, RI considered suspicious

As Twin River security were patrolling the grounds around 5am, they noticed flames coming from a nearby neighborhood. As they investigated more, they came upon a house on fire on Jason Dr which is behind the Twin River property. A room on the 2nd floor of the house was fully involved. All the occupants of the house escaped prior to FD arrival. Firefighters entered the building, knocked down the heavy fire & stopped further spreading of the fire. It took about a 1/2 hr to bring the fire under control. No injuries were reported. http://www.providencefirevideos.com