"Upon arrival, firefighters found the structure fully involved in fire," said Vicksburg Fire Chief Trey Martin. "A defensive fire attack approach was taken to the vacant house with no utilities. The structure had no utilities, and no surrounding properties were damaged. All crews cleared the scene at just before 5 a.m.Chief Martin said that the cause of the fire is still in the preliminary phase. The investigation is led by Fire Investigator Nathaniel Williams.