A 14-year-old boy was run over by a TNSTC bus on the Chennai bypass road at Senthaneerpuram on Friday night. The victim was identified as Z. Mohamed Yasin from Khajapettai. The boy was riding a bicycle and was trying to cross the road, when a bus proceeding to Thanjavur from here, knocked him down. He fell on the road and came under the wheels of the vehicle, and died on the spot. Traffic police south investigation unit has registered a case.