In the first case of honour killing in Kolkata, a garment trader decapitated his younger sister with a sword and took the severed head to the police station, where he surrendered.
The 29-year-old trader, identified as Mehtab Alam, discovered that his sister, 24-year-old Nilofer Bibi, a mother of two, was staying with a rickshaw-puller with whom she had eloped, police sources said on Saturday.
Alam went to the rickshaw-puller's house, dragged out his sister and beheaded her with the sword in full public view on Friday, said Deputy Commissioner of Police (Port division) Mehboob Rehman.
Local people watched horrified as Alam walked down the road at Ayubnagar with the severed head dangling in his hand, before surrendering to the Nadial police station.
"He even asked for a glass of water after reaching the police station," police sources said.
According to eye-witnesses, Alam justified his crime saying he did it to punish his sister for the extra-marital affair.
"It was not the decision of the family to kill her. The brother had lost his temper and had unilaterally decided to kill her," Rehman said.
Alam was on Saturday remanded to judicial custody till December 22 after his production in Alipore court.