Power to St. Louis office building cut by electrical fire LOUIS, June 26 (UPI) -- An electrical fire that began underground cut power Tuesday evening to a downtown St. Louis office building. Electrical power was cut to the 36-story U.S. Bank building, KSDK-TV reported. The fire set off explosions. St. Louis Fire Capt. Dan Sutter said no injuries were reported, the St. Louis Post-Dispatch said. But the blaze left at least 10 people stranded in elevators, and some commuters were unable to get to cars parked in areas that were closed because of the fire. The fire in an underground electrical vault was reported around 5 p.m., Sutter said. It had been extinguished by about 6:30 p.m. John Luth, who heads the underground division at the power company Ameren Missouri, said a transformer failure appears to have started the fire. Sutter said the cause is still under investigation.