A traffic stop turned into a foot chase. Officers pursued three men after they ran from a vehicle at the intersection of 8th and P Streets in Bakersfield. Rafer Johnson School was locked down Tuesday morning just after 11:00 until police located 20-year-old Mario Colchado, 19-year-old Jesus Cornejo and 18-year-old Ricardo Alatorre in a backyard and arrested them on weapons and gang charges after a pistol was found in the car.