A Columbia man died in a residential structure fire Monday. The Columbia Police and Fire Departments responded to a fire in the 200 block of Ruby Lane about 10:40am. Authorities observed smoke and flames through a window of a room in the back of the residence. Crews controlled the fire in about five minutes. The fire was confined to one room and caused significant damage. Authorities located 66-year-old George Ray Grant dead in the room. A second person inside the residence escaped the fire with minor injuries. The Columbia Police Department says it doesn’t suspect foul play.