The mandate of the first committee comprising political leaders would be to suggest short and long-term strategies and a practical approach to tackle the problem, Sangma told the assembly.
The other committee would examine the laws and practices relating to tenancy and suggest specific measures to regulate tenancy practices in the state, he said on the first day of the three-day Assembly session.
Stating that influx has serious ramifications on the demography of the state, the chief minister called for efforts to put in place stringent, comprehensive and an institutionalised mechanism to deal with the issue.
"Our government is fully seized of the matter. The examples of the states in the Northeast cannot be ignored. Timely measures will have to be taken to ensure that we are able to maintain the demographic profile and our tribal identity," he said.
He said task forces have been constituted to carry out special drives against influx.
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The chief minister's statement came following demands by several tribal NGOs for introduction of the Inner Line Permit, a provision of the Bengal Eastern Frontier Regulation, 1873, to protect the indigenous people.