City public information officer Shannon Haigh says the officer was arriving at the fire before midnight Tuesday when something exploded and he suffered a minor hand cut.
Three people from the Cascade West apartments were treated for smoke inhalation at Skagit Valley Hospital.
Haigh says a man was found about two hours later and was flown to Harborview Medical Center in Seattle with burns to his airway and other parts of the body.
The three-alarm fire caused heavy damage to the top two floors of the three-story building.
About 200 residents have been displaced, and about 75 of them are being sheltered at nearby Skagit Valley College with help from the Red Cross.
More Northwest Headlines
Striking Pasco teachers, district reach tentative agreement 11:32 a.m. Parents sue Redmond shopping center over daughter’s death 12:13 p.m. Man accused of causing $20,000 in damage to sports car faces felony 12:12 p.m. South Sound districts expand free kindergarten programs 12:10 p.m. Yacolt girl battles brain tumor 11:09 a.m. Spokane man, 2 young children dead after crash in Idaho Longview woman indicted on federal child pornography charges Dig in Redmond uncovers 10,000-year-old stone tools
Our new comment system is not supported in IE 7. Please upgrade your browser here.