Fire investigators suspect a lighting fixture is responsible for an afternoon fire that did an estimated $75,000 worth of damage to a Helena home. The fire was called in at about 12:40 PM on Thursday, April 19th at a home on the eleven-hundred block of Choteau Street. Two engines and a rescue unit responded. Firefighters entered the home through the garage and the front door. Helena Fire Assistant Chief Ken Wood says the fire was knocked down in short order. The home was occupied by one person at the time, but no injuries were reported. The Red Cross has been called to assist the family living in the home.