Many families have been displaced and more than 60 houses and churches have been damaged due to the cracks which have appeared in the last two months, the sources said.
Geologists in Geology and Mining Department are conducting geological surveys with experts saying that check dams have to be constructed to prevent further damage, the sources said.
Relief and rescue work have been undertaken by the Mamit and Champhai district administrations and two weeks free ration were given to displaced people.
The state government also was making arrangements for alternative land for construction of houses for the displaced families and has given Rs 35,000 to each for rehabilitation.
Monsoon downpour has also led to massive landslides in many places in Mizoram.