Ultras of National Liberation Front of Tripura stopped a passenger jeep at Tuipuibari, a tribal hamlet under Phayleng police station of Mamit district in neighbouring Mizoram at gun point last evening and kidnapped the four persons including the driver of the jeep, a police officer said.
A team of Tripura police from Kanchanpur sub-division of North Tripura district rushed to the spot.
Police said, as the Bangladesh border was not very far from the area, a BSF post was also set up in the area.