However, the residents of the Thinghlun village alleged before Mamit district police that the two persons had been stealing from their betel nut fields.
Mamit superintendent of police C. Rodingliana said the injured were admitted to a hospital in nearby Kawrthah village.
He said the two injured had allegedly been stealing paan leaves from a plantation.
Sources said the people of Kololian on the Tripura-Mizoram border have a running dispute with Thinghlun village.
They often accuse their neighbours of stealing from their fields, particularly from their betel leaf plantations.
Kololian is a Bru-dominated village.
The protesters demanded the immediate arrest of the shooters and said the residents of Thinghlun village should not be allowed to have any jhum fields in their area.