The entire process of the post-mortem done on the slain teenager Abesh Dasgupta was videographed as per the wish of his mother who had written to the Ballygunge Police Station officer-in-charge in this regard, a senior officer of the Kolkata Police said.
Seventeen-year-old Abesh Dasgupta, a class XI student, was killed when another youth hit him with glass shards during a quarrel at the car parking lot of the writer's apartment at upscale Ballygunge after returning from a birthday party at a club.
A youth detained and grilled by the police today claimed that it was "an accident" and nobody was responsible for it.
The police has lodged a murder case against "unknown person" on the basis of the statement of the mother of the slain youth recorded at a hospital where she was admitted in an unconscious state after getting the death news of her son.
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The post-mortem report would play a crucial role in solving the case, an officer of the Kolkata Police Homicide department said, adding that they were also trying to get the footage of the CCTV cameras at the complex.
Sleuths were also not ruling out a love triangle in the killing and an officer said prima facie it appeared that the teenager came into the girl's life after her break-up with another youth, known to both, and there was a probability of the estranged youth involved in yesterday's attack.
The deceased, whose father had died earlier this year, was a resident of Southern Avenue in south Kolkata.