(Portland, OR) -- A woman has died following a house fire in Northeast Portland. The fire was reported Monday morning at a home on Northeast Garfield Avenue. Firefighters arrived to find smoke coming from under the porch roof. The fire was burning in a front room. Firefighters found a 64-year-old woman on the second floor. She was hospitalized and later died. There were no working smoke detectors. Investigators believe a space heater plugged into an extension cord started the fire.