While still at a house fire on Lyell Rd., Gates firefighters were dispatched to a reported chimney fire on Overbrook Rd. Some equipment cleared Lyell Rd. to respond along with Rochester Truck 5 who was sent mutual aid. Engine 4512 arrived on location and reported embers from the chimney. Firefighters contained the fire using 'chimney bombs' which are essentially plastic bags filled with a dry chemical extinguishing agent. No injuries were reported and the fire did not extend into the rest of the house.