A three-alarm fire heavily damaged the upper part of a Northeast Portland building housing Big's Chicken on Thursday morning.

The building near Northeast 57th and Glisan is home to Big's Chicken, a popular spot lauded recently by The Oregonian/OregonLive. Ben Dyer, co-owner of Big's, said the fire significantly damaged the building and hit the second floor and attic hardest.

He said the complex housed six apartment units.

He said his restaurant "is mostly fine," but added, "Everything above Big's is a total loss." He estimated that his business will be closed for months.

Two residents were rescued from smoky apartment units; one jumped from an upper floor. Two people were taken to an area hospital for treatment of what fire officials described as non-life-threatening injuries.

Fire officials don't know where the fire started or the cause. They said the fire proved difficult to extinguish.

For updates on the fire, check the link below.