The fire that gutted four floors of First Interstate Bancorp's high-rise headquarters won't affect customers at the bank's operations in Utah and 18 other states, officials said.

Most of the computers that control checking and savings accounts, automatic teller machines, and other business of the nation's eighth-largest banking company are in a building six blocks away, said John Popovich, director of public affairs.The main downtown Los Angeles branch, on the building's ground floor, was the only one closed by the fire, Popovich said.

The blaze that started Wednesday night and raged through the early morning hours gutted four floors of the 62-story tower, the tallest in the city, injuring 40 people and killing one maintenance man who was trapped in an elevator.