Butte County authorities believe 36 year old Robert Johnson to be the ringleader of a group of four that held three people at gunpoint and a large amount of money and marijuana was allegedly taken. On February 5th Investigators traced Johnson to the San Francisco Airport and they issued an Alert. Local authorities found Johnson in Placer County and reportedly found 28 thousand dollars in his vehicle. Johnson has since been booked into the Butte County Jail on charges of robbery and kidnapping. According to the Butte County Sheriff's Office, investigators are working on identifying the other three suspects in the robbery.