Investigators say it may have been an electrical overload that caused the Royal City barn fire last Saturday that killed 10 horses. According to the Grant County Sheriff’s Office the fire started early Saturday in 60’x120’ barn in the 12-900 block of Dodson Rd. and firefighters from Grant County Districts 10 and 11 found the 4,000 square foot barn was fully engulfed. Damage was estimated at $80,000.