More than six-thousand pigs were killed in a weekend fire at a hog confinement building in northwest Iowa near Spencer. Fostoria Fire Captain Scott Dodge says crews were called to 3570 200th Avenue around 6:45 Saturday night. A large confinement building was fully engulfed in flames when firefighters arrived. Fostoria immediately sought assistance from Spencer, Royal, Everly and Dickens. Firefighters attempted to enter the south end of the building, but discovered the roof had collapsed when they got inside a shop area. Dodge says all they could do was control the blaze and keep it from spreading to nearby structures. Officials were concerned about the winds blowing embers into a neighboring building filled with round hay bales. Fire crews remained on the scene overnight for a total of about 12-hours. Dodge says 66-hundred hogs perished in the blaze. A camper and tractor were also destroyed. People reported seeing the flames from several miles away. The State Fire Marshal’s office is investigating the cause of the fire. The rural Spencer farm is owned by Vernon Olberding.