The mob also pelted stones as a police team went to the spot to pacify the villagers prompting action by the cops, a senior police officer said, adding six persons were subsequently arrested for rioting.
15-year old Sk Sonu slipped into the swollen irrigation canal at around 9:30 pm and though a fire brigade arrived at the spot, it could not undertake rescue operation due to darkness and lack of equipment.
Soon three other locals joined rescue work but one of them Sufal Soren could not come out of the canal.
This infuriated the mob which then damaged the fire brigade vehice and brickbatted the police.
Personnel of RAF were patrolling the area.
Search and rescue operations would resume tomorrow morning for the two missing, the officer said.