The phone number given by Maoists to the media asking Union Home Minster P Chidambaram to call on Thursday for peace negotiations belongs to a police constable who was abducted by the rebels.The Vodafone number 9734695789 belongs to Sisir Kanti Nag, the constable who was abducted by the Maoists demanding the release of the Peoples' Committee against Police Atrocities leader Chatradhar Mahato.