A store fire in the northern Russian city of Ukhta killed 20 people and injured another 17 Monday, emergency officials said. The fire initially was thought to be the result of a gas explosion, but Russian media quote an official now saying it is apparently an arson attack. Russian state television channel Rossiya reported that women and children were among the victims. Thirty people were evacuated safely from the building, Emergency Situations Ministry spokeswoman Irina Andriyanova said.