A 37-year-old man was arrested Wednesday in connection to a three-alarm fire that burned down an office building in Salt Lake City. The fire broke out around 2 a.m. Sunday at 1110 East Ashton Avenue. One firefighter was injured and six residents who lived in an apartment building nearby were displaced. More than a dozen local, small businesses were located in the building. The 37-year-old man was booked into the Salt Lake County Jail for Aggravated Arson. His name has not been released yet.