LINCOLN -- Fire officials are investigating the cause of an overnight fire at an apartment building near 27th and "F", after it started in the basement apartment around 2am Saturday. Investigators say all the residents evacuated the building and no one was injured. Electricity has been cut to the entire building forcing 12 families who live in the building to relocate Only five families will need assistance relocating, with the help of the American Red Cross. The rest of the occupants found shelter elsewhere. Damage estimates are at $90,000.