4-alarm fire threatens collapse of Portland apartment building.

A 4-alarm fire broke out at a Southwest Portland apartment building, with officials closing both directions of Interstate 405 near the scene due to the risk of the building collapsing. Firefighters helped evacuate people from inside the building, and Portland General Electric cut power to the area. The building lacked a sprinkler system and was not modernized with interior fire suppression. Officials are urging people to avoid the area, and investigators are working to determine what sparked the blaze.