The three persons, while they were returning from a weekly market, were fired at by police after the vehicle they were travelling did not stop at a police check point last night, North Garo Hills District Deputy Commissioner S C Sadhu told PTI.
All the three occupants of the car were critically injured and shifted to Guwahati where their condition was reported stable, he said.
As the news spread, a mob set afire the local police station, five police vehicles and a makeshift shelter for police guards within the premises, he said.
District SP Dalton Marak said, "we had information about William Sangma (who had earlier evaded arrest by running away in a vehicle which was asked to stop) and had duly set up a checkpoint, close to the Belpara Baptist Church. However, at about 10:30, when we asked the vehicle to stop, it refused to do so".
The situation, however, was brought under control this morning after the residents of the town took out a march against the "excesses of the police", he said.