New Delhi, Feb. 10 -- As soon as the news of chief minister N Biren Singh's resignation spread, the Imphal valley area shrouded into a cover of heavy security on Sunday night. With security forces patrolling the streets, houses of MLAs were guarded, even as the Bharatiya Janata Party (BJP) is yet to announce the name of the leader who will replace Singh and take charge of the restive state that has been roiled by violence for nearly two years.

Security was also increased because no MLA has been named as the new CM-there are a few claimants who have openly revolted against Singh. BJP's northeast incharge Sambit Patra is staying back in the state to hold meetings and find a new face, people aware of the matter said.

Though no high alert w...