Tucson Fire Department issued the following announcement on Feb. 15.
At 8:55 Tuesday morning #TucsonFire was dispatched to the 2400 block of E. Pinal Vista for reports of a house fire. Engine 10 would typically be the first to respond, but with the crew at training, Brush Truck 10 responded. With water on board BR10 was able to arrive on scene at 8:59 and immediately deploy a booster line, gaining control of the fire in seconds. Additional units arrived and the fire was controlled at 9:17. 3 children and 1 adult have been displaced by this fire, and the Red Cross have been called to assist.
Fire investigators remained on scene working to determine a cause
Original source can be found here.