(Portland, OR) -- Portland Fire crews battled two house fires Monday night. The first house was located in the Clinton Neighborhood. It started in an exterior shed and spread to the home. The flames damaged the second floor and an attic addition. It took 30 minutes to put out the fire. At the same time, another house fire happened 20 blocks away in the Richmond Neighborhood. Fire crews from further away responded along with unassigned crews from the first fire. No one was injured in either fire. Investigations into how the fires started are ongoing.