PORTLAND, Ore. (KOIN) — A man is dead and a woman has been hospitalized after a house fire early Wednesday morning in Northeast Portland.

According to Portland Fire & Rescue, two people were on their way to work when they saw the flames coming from a house near the corner of NE Wygant Street and 57th Avenue. Fire officials told KOIN 6 News the two bystanders tried to rescue a person who was trapped inside the home.

By the time firefighters arrived around 3:40 a.m., the blaze had reportedly spread throughout the house.

PF&R said a woman was already outside the home when crews arrived. She was rushed to a nearby hospital and treated for smoke inhalation, according to fire officials.

Crews tried to search the home for the other person, but PF&R said hoarding conditions “added fuel to the rapidly growing fire” and made it unsafe for firefighters. Firefighters saw an inside wall crumble “almost simultaneously” as a crew looking at the sides and back of the home found raging flames.

Fire officials said they ultimately were able to get inside after suppressing the flames, but by then, the person stuck inside had died. Firefighters found 59-year-old David Johnson and a dog dead.

An investigation is underway to determine what caused the fire.