An arrest has been made in the murder of 35 year old Chad Gerber in Laclede County. According to the Prosecuting Attorney’s Office 65 year old Matthew Rumbaugh of Mountain Grove has been arrested and charged with first degree murder, first degree assault and two counts of felony armed criminal action. Rumbaugh owned the garage where Gerber worked. Gerber’s 15 year old son Riley Aaron Gerber died Saturday morning at a Springfield hospital after also being shot during the incident. An autopsy is scheduled for Monday. Rumbaugh is being held in the Laclede County Jail without bond.