Calcutta, Dec. 31 :    Calcutta, Dec. 31:  Elusive Tiljala crimelord Mohammad Fahemuddin, alias Sona, finally fell into the police dragnet on Sunday night after a long chase through serpentine Shyambazar lanes. The Hare Street police, headed by deputy commissioner, central, Zulfiquar Hasan, zeroed in on the gangster after a tip-off that he would meet one of his contacts at the Shyambazar five-point crossing. Sona and an aide, Naushad, are accused of 'facilitating' Khadim's vice-chairman Parthapratim Roy Burman's kidnapping in August 2001. In the aftermath of the kidnap, Sona had taken refuge in Bihar. During the first week of December, he ran out of money and returned to the city, but steered clear of Tiljala, earlier his area of operations. He kept changing base to throw the police off his trail. 'He would even change mobile phones so that the sleuths would not be able to tap the lines,' said an official. The breakthrough came on Friday, when the police were tipped off that Sona might collect money from a promoter in return for 'protection'. The police, however, drew a blank when they were informed that Sona would either collect the money in Howrah or in a Park Street restaurant. He turned up at neither place. On Sunday morning, another tip-off that Sona would meet a 'client' near the Shyambazar five-point intersection proved fruitful. As soon as Sona arrived at 11 pm, the police fanned out in an effort to surround him. But spotting the cops, Sona tried to escape through the maze of bylanes. But his luck ran out when he reached a dead end and could not scale a wall. According to Hasan, Sona has been charged with robbery, extortion and murder. CID sources said Sona, Naushad and their patron, Mohammad Tasleem, alias Chunnu Mian, were instrumental in ensuring safe passage to the 'outstation kidnappers'' for a hefty fee. Special inspector-general of police, CID, V.V. Thambi, said Sona's arrest was an important breakthrough that would help sleuths solve the Khadim's kidnapping case. Sona, however, told Metro that he was innocent. 'The CID has framed me. I have been nailed because I am a criminal who operated from the place where the Khadim's vice-chairman was kidnapped.'' Sona was produced at Bankshal Court and remanded in police custody till January 10. Trinamul protest: Trinamul Congress activists, led by Madan Mitra, organised a road blockade in Bhowanipore on Monday, protesting the state government's proposal to ban agitations and roadblocks.