New Delhi: The IIT PhD student, who allegedly murdered a teenaged girl from Manipur here, is a "pervert and maniac" who suffers from obsessive compulsive disorder, police said on Monday.
Pushpam Kumar Sinha (34), who is doing research in wave mechanics from IIT-Delhi, was arrested on Sunday for allegedly strangling a 19-year-old girl at her second floor accommodation in south Delhi's Munirka on Saturday.
Sinha allegedly strangled the teenager after she "angrily resisted" his advances. "He felt that she might inform police and so he strangled her for three minutes. To make it as a case of accident, he put her face on the gas stove and lit it.
"Initially there was no suspicion of foul play in the incident but the post mortem report suggested that she died of strangulation and not due to burns. We zeroed in on Sinha after discreet inquries," Deputy Commissioner of Police (South) H G S Dhaliwal told reporters.
Dhaliwal said that during searches at Sinha's room, which is one-floor below the girl's accommodation, it came to light that he was suffering from obsessive compulsive disorder.
"Grafittis on the walls showed that he was a pervert and maniac. He had a complex. He wrote in his diary that he was not able to make friends with girls. One of the graffitis read that 'this is the time to make girl friend. I am finally making someone," he said.
"A very vulgar kind of red grafitti was found on the wall of his room and he wrote many things," Dhaliwal said, adding it took around four hours of interrogation to make him confess to the crime.
"During interrogation, he made an alibi where he was and what music he was listening to and all. He also gave a sequence of events, which included that of him playing with the children of neighbours. He had everything planned in his
mind," he said.
Sinha told police he was afraid that he may be arrested by police if the girl was alive. After making sure that she died, he allegedly burnt her, the officer said, adding her face, hair and upper torso suffered burn injuries.
However, postmortem report said the victim was not raped.
Sinha had made acquaintance with the girl during the Diwali celebrations but it had not developed into an intimate relationship. "He was living next door and used to greet each other. Nothing more than that. Advances were totally from Sinha's side," Dhaliwal said.
According to her sister, who works in a restaurant in Connaught Place, Sinha had allegedly passed lewd comments and shown gestures which were like "a little bit of stalking".
His diaries and files in laptop suggested that he was "very sad" because he could not marry. "He had bought many gifts for girls like watches and teddy bear," Dhaliwal said.
"There are some records about some kind of academic misconduct also which we are checking," the officer said.
Sinha's personal diary suggested that he was in dock for some kind of "misconduct" with (some) girls, a senior police official said.
"Sinha has a great complex. He was not been able to propose to any girl," Dhaliwal said.
The teenaged girl had come to the Capital a month ago and was staying with her sister.
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