The state fire marshal is investigating the cause of a two-story house fire, which occurred in Fairbury Saturday morning. The house, at 904 East Locust Street, sustained major damage according to Fairbury Fire Chief Leroy McPherson. No one was injured and one person was home at the time. Meanwhile, no one was injured, but a cat was lost in a weekend house fire on Pontiac’s south side. Firefighters were called to the home at 100 Diller Street early Saturday. Officials say the house, owned by Aimee Pierce, sustained moderate damage to its basement and some first floor walls. A furnace may have caused the blaze. Firefighters did rescue two dogs, two cats and a hamster from the residence.