Due to incessant rain since Tuesday night, entire Dharmanagar town and its periphery were waterlogged and 4000 people took shelter in five relief camps, Sub-Divisional Magistrate, Pradip Acharya told reporters.
He said 10 boats were pressed into service to rescue the people in the affected areas and added that the water had started receding.
Acharya said neighbouring Karimganj district in Assam was also affected by the flood and no vehicles could enter Dharmanagar from that side since yesterday and no long-distance buses plied from Dharmanagar.
Tripura was cut-off from the rest of the country as the Assam-Agartala National highway, considered to be the life line of the state, was blocked due to flood.
Meanwhile, two labourers engaged in MGNREGA works at Krishnabari village of Khowai district died in incident of lightning yesterday, a police official said.
They were identified as Bipul Debbarma (19) and Basana Debbarma (42), the officer added.