Twelve of these stations fall in the north-west police district.

The threat has forced the security apparatus to plan for an anti-Naxalite cell in the city, say Intelligence sources.

Sources in Delhi Police say senior officers are in touch with their counterparts in Naxal-affected states such as Chhattisgarh, Jharkhand, Andhra Pradesh, and West Bengal. “The arrangement is essentially for intelligence sharing to check the spread of ultra-Left extremism in Delhi,” a police source said.

Chhattisgarh DGP Vishwaranjan said, “States like Gujarat and Delhi, where some Maoist activity has been detected, get in touch with us through the Intelligence Bureau.”

About the proposed anti-Naxalite cell, sources said it has been planned on the lines of the anti-terror unit of Special Cell. “Unlike the Special Cell, which attempts to thwart terrorist activities in general, the focus of this cell would entirely be on containing Maoist extremism.”

Delhi Police Commissioner Y S Dadwal neither confirmed nor denied the proposal of forming an anti-Naxalite cell but told Newsline that the city police are looking into Naxalite menace with “seriousness”.

Senior officers said the idea of forming the cell follows revelations by several arrested senior Maoists ideologues that the extremists were planning to move towards big cities, the national capital being one.