Firefighters responded to a fire at a building in downtown Omaha after thick, black smoke could be seen throughout the area.The one-alarm fire was at a building near 20th and Douglas streets. READ MORE: Crews respond to fire at a building in downtown OmahaFirefighters had the fire under control in about an hour. There are no injuries reported at this time, according to authorities.There is no information as to the cause of the fire at this time.Click here for the latest headlines from KETV NewsWatch 7