A man, not yet identified, has been detained by the Placer County Sheriffa s department after being tracked down after driving off with a car containing two children last night at a car repair shop while the father was inside filling out paperwork. The man climbed into the vehicle and started to back up as the father ran out attempting to stop him. He drove off with the children inside. Placer County Sheriffs tracked the car to a location about a mile from Thunder Valley Casino. A K-9 officer helped track the man to the Casino were sheriff officers detained the man and then arrested him. Children are safe.