The militant, Nabanu Burman, who was recently arrested in Bengaluru was being brought to Malda, superintendent of police R Yadav said.
The police had put up posters carrying the photographs of three KLO militants -- Burman, Malkhan Singh and Jhaksu Mondol -- to ger information about them.
Burman was carrying a reward of Rs 10,000 on his head.
The SP and DIG (Malda Range) S Bandopadhyay said extensive raids were conducted in Gajole area to nab Malkhan Singh. Door-to-dorr searches were conducted but he was not found.