Calcutta, May 1 :    Calcutta, May 1:  Behala don Ganesh Chhetri, arrested on Monday, was working on a plan to create disturbances in Behala West, Tollygunge and Jadavpur Assembly constituencies during the election. This was revealed during sustained interrogation by Calcutta and South 24-Parganas police officials. A booklet with details of the polling stations in the three Assembly constituencies was found in his possession. South 24-Parganas superintendent of police D.K. Ganguly said vigil has been intensified in areas where these booths are located. State chief minister Buddhadeb Bhattacharjee is locked in a multi-cornered contest at Jadavpur, while Trinamul Congress spokesperson Pankaj Banerjee is the party candidate from Tollygunge. CPM legislator Nirmal Mukherjee and Trinamul's Partha Chatterjee are fighting a cliffhanger at Behala west. Chhetri is facing six murder charges, deputy superintendent of police, town, Subhankar Chatterjee said. The police recovered arms, ammunition and packets of heroin from him. Chhetri has confessed to the killing of Joydeb, one of his rivals, in 1994. A year ago, he reportedly shot at two morning-walkers, Ashok Halder, a local CPM worker, and Ajit Majumdar, who died on the spot. Chhetri told the police he had attacked Halder as the CPM activist was trying to resist his gang. On April 15, Chhetri fired at Laloo, a rival, but missed. Police are on the look-out for Chhetri's associates Ranjit, Bangal, Somnath, Socket and Polta. Chhetri had asked Polta and Socket to 'look after the booths'' in Jadavpur, while Ranjit and Bangal were put in charge of Tollygunge and Somnath of Behala West.