NPSO Deputy S.Kennedy, Sgt. C. Olliff, and Natchitoches Parish Fire Protection District #9 were on the scene of a structure fire, a double-wide manufactured home, in the 100 block of Marshall St. in Campti at 10:30 p.m. Wednesday. The cause of the fire is undetermined. Relatives of the owner said the home has been vacant for a couple of years.