Huntsville firefighters are working to determine the cause of a fire at a Huntsville apartment building. The fire happened around 12:30 p.m. Tuesday at Governors House Apartments on Governors House Drive, just west of Jordan Lane. According to Huntsville Fire and Rescue, no one was transported to the hospital, but four of the 16 aparment units have fire damage. Officials said they don't know if more units will be displaced. Authorities said a fire occured at the apartment complex about a month ago.