It's unclear what started the fire.

By: KDKA-TV News Staff

PITTSBURGH (KDKA) — Three people, including a firefighter, were taken to the hospital following an early morning fire in Pittsburgh’s Beechview neighborhood.

The fire broke out around 2 a.m. along Sebring Avenue.

(Photo Credit: KDKA Photojournalist Brian Smithmyer)

A 70-year-old woman was taken to the hospital in critical condition with burn injuries. A 50-year-old man is being treated for burns as well. A police officer was also taken to the hospital to be treated for smoke inhalation.

It’s unclear what started the fire.

Stay with KDKA for more on this developing story.