Two person were killed and two others have been injured in a road mishap in Jorhat district on Friday. The mishap took place early in the morning on the National Highway at Koliapani when a speeding dumper knocked down four persons who were walking. Two died on the spot while two others including a minor boy have been injured. The deceased were identified as Shiva Kurmi and Madhab Gogoi. The dumper managed to flee from the spot.