VIDEO: Fire investigators are working to determine the cause of a blaze that destroyed one building and damaged another. Dispatchers got the call just after 12:15 a.m. regarding a fire at a vacant home in the 200 block of Vine Street. Firefighters spent more than an hour working to extinguish the blaze at the vacant home. According to a news release from the Shreveport Fire Department, the on-scene commander made the decision not to send any firefighters into the structure, and attempt to extinguish the fire from outside. Two more fire companies were requested to assist with bringing the fire under control. As the flames raged, the fire spread to the former Nissen and Associates building. That wood frame single-story building was the size of the house and was fully engaged in flames.