Calcutta, June 27 :    Calcutta, June 27:  A teenager died when he slipped off a 25-foot wall of a telecom factory in Alipore on Tuesday. The boy was allegedly trying to escape with a bagful of copper wire in the night. Two people have been detained for interrogation. Officer in charge, Alipore police station, Pinaki Mondol, said the unidentified body was found near a bush, adjacent to Tolly's Nullah, late on Wednesday. The boy had reportedly died of head injuries. Sleuths believe that the body had been lying in the bush for the past two days. 'The body was decomposed. The boy had probably slipped while trying to scale down the Tolly's Nullah side of the wall, after stealing the wires. His head was nearly smashed. So far, no one has come to claim the body, nor can we locate his family,'' said an investigating officer on Thursday. The incident has blown the lid off a network of thieves who pilfer copper wire and other material regularly from the factory. Alipore police said they were investigating reports that equipment worth lakhs are being pilfered at regular intervals. Mondol said the security officers of the factory and senior officials have been summoned to discuss the incident. 'We suspect that some of the factory workers and security guards are involved in the racket. Our officers are investigating all angles,'' Mondol said. Investigations revealed that the teenager had managed to cut across the barbed-wire fence on the wall and then tie a rope to a tree next to the wall. 'We assume he slid down the rope to enter the factory premises. We are sure that some of his associates helped him across the wall,'' said an officer. According to Mondol, at least four others were involved in the theft bid. ' We suspect that the gang operates from Ekbalpore. An unused dirt lane from the factory leads directly into the Ekbalpore area. The gang could have availed of this lane,' said Mandal. 'The operation could not have taken more than 45 minutes, but when the boy fell, the others escaped, leaving the stolen goods behind. He could have been alive when his associates deserted him. The spot outside this side of the factory is full of thick shrubs and bushes. Moreover, it is slippery. A false landing could cause an instant death in Tolly's Nullah,'' added the officer. The general manager of the factory was not available for comment on Thursday. The company has reportedly initiated an inquiry to trace the insiders who helped the thieves.