AP engineer P Krishna Rao, who was abducted a month ago by militants of the outlawed Human Popular Advanced of Bodoland (NDFB), was released Tues morning in northwestern Province's Kokrajhar govern, officials said. Rao, who was kidnaped Oct 16, was free at 9.15 a.m. He is riskless, but fatigued and looked human. Far information were expected. Rao was labor trainer of Gayatri Business Troupe reserved in digit lane highway intellection operate in Kokrajhar order.