One person suffers serious burns in early morning San Francisco fire

One person suffered serious burns after discarded smoking materials sparked a fire early Saturday in San Francisco's Western Addition neighborhood, fire officials said.

The person was rescued by fire crews from a unit in a building at 1425 Fillmore St. shortly after midnight, according to a Twitter post by the San Francisco Fire Department.

The person was taken to a burn center in serious condition. The blaze was deemed accidental.