Siliguri, Sept. 4 :    Siliguri, Sept. 4:  There's nothing official about it yet. But there are indications to suggest that abducted Siliguri businessman Mukesh Agarwal has been released in Nepal. Neither police, nor Mukesh's family members are speaking, but a special investigation team left for Nepal this evening on their mission - codenamed Panther 4 - to nab the abductors. Mukesh, the owner of an amusement centre called Millennium Paradise, was abducted on August 20 when he was about to return home. It is now believed he is in a 'safe house' in Nepal. This belief was strengthened when Bihar police today disclosed names of the members of a Bihar mafia cartel responsible for the kidnap. 'Though we have identified the mafia cartel involved, we have yet to arrest anyone,' Purnea superintendent of police K. Surinder Babu said over the phone. 'The mafia cartel includes the Brijesh Tewari-Nandu Singh gang from Kishanganj and the Pappu Singh gang from Bishanpur. We also believe the Chotu Rajneesh gang based in Araria is involved.' Surinder Babu said though the Bihar gangs executed the kidnap, the entire operation was masterminded by two Siliguri-based 'ringleaders': Sittu and Sentti. Both are in their mid-twenties, both are clean shaven and of Punjabi origin. After abducting Mukesh, the gang headed towards Bahadurganj, barely 10 km from the Indo-Nepal border. But they kept shifting base. 'When police turned the heat on the gang, they first abandoned the kidnap vehicle - a white Tata Sumo - at Bahadurganj and slipped into Nepal,' the police superintendent said. He ruled out the possibility of the gang being still holed up in Bihar. 'We are also certain that the Siliguri masterminds have fled to Nepal along with the rest of the kidnap gang. The mafia cartel has a well organised network of safe houses and support bases in the eastern Nepal industrial town of Biratnagar,' Surinder Babu said. A member of the special investigation team, neither confirming nor denying that Mukesh had been released, said: 'Though the identity of the masterminds has been established, we are still in the dark about their whereabouts.... Though we have reasons to believe that a ransom demand has been made though relatives, and the family may be negotiating on their own with the abductors, nothing has come to light about the release of Mukesh,' the official added.