Meri bhi icchha hoti thi, mere andar ka shaitan jag uthta tha (even I felt the urge, the demon in me used to wake up). This is what Surinder Koli, sentenced to death for one of the 18 Nithari serial killings, is quoted as having said under the influence of the truth serum at Gandhinagars Directorate of Forensic Sciences (DFS) laboratory while describing visits by "call girls" to the house near Noida "almost every night". The DFS put Koli and his employer Moninder Singh Pandher through psychological assessments, polygraph tests, narcoanalysis and brain electrical oscillation signature (BEOS) profiles. The DFS report on the tests, accessed by The Indian Express, says Koli had no mental or personality disorder, that all killings were rooted in fantasy and an overpowering compulsion to kill. Pandher, the report says, may not have known about the killings in his own house. "My house is mine only on registry, it is more of Surinder's than mine. how could so much happen under my nose without my awareness," Pandher is quoted as having said during the tests. The report says Koli was convinced his employer was responsible for his sudden urge to kill, cut and eat "maarna, kaatna, khaana". The DFS tests profiled the duo as two "emotionally deprived and sexually deviated men, separated from their wives and family, living in a single house and trying to cope on their own in their different ways, without feeling concerned for, or bothered about each other." According to the report, Koli spoke of "call girls" visiting the house "almost every night" and how, after watching from the shadows, he would find it difficult to check his own desires. "Meri bhi icchha hoti thi, mere andar ka shaitan jag uthta tha," the report quotes him as having said. Koli would often dream of a girl in a flowing white dress, laughing and taunting him. The report says each time he dreamt about her, he would tremble, lose appetite and sleep until he found a victim, and relief. "In Koli's narco analysis, he recalls making sexual attempts on 13 victims, 15 strangulations, 11 heads severed and thrown into the gallery, 14 bodies dismembered from shoulders, torsos cut into small pieces and packed in double polythene bags and disbursed in the nala," states the report. According to the report, when Koli realised that Pandher had engaged private detectives to trace Payal, one of the girls who had gone missing, he was not disturbed. "On the contrary,he picked five more victims. his increased killing frequency,fear of getting caught or his relationship with Pandher could not bind him or prevent him from acting out. Neither did it help him get over his overpowering compulsion," states the report. "Kolis first step was to throttle the victim with her own cloth and make her unresponsive, so as to try sex. In case the victim showed signs of waking up,he would kill her. He would carry the body to the bathroom on the first floor,leave the body there to cool down, wait until it got dark and then cut the body pack body parts separately," states the report. Once he unsuccessfully tried to eat the liver of the lone boy he killed, mistaking him for a girl, states the report. It points out that Koli, in his narco test, claimed he had sex with all his victims but the BEOS test found he had sex with only three of his victims. And the reason why Koli managed to deftly cut and dispose of bodies, says the report, may have been due to the fact that he had experience of cutting bodies of animals sacrificed at a temple in his village. This article was originally published on October 12, 2009 and has been republished in light of the Allahabad High Court's judgement.