DEHRADUN: In a shocking incident, four men were allegedly involved in the beheading of a teen-aged girl, who had accused one of them of raping her earlier this year, in front of her sister in Ramnagar area of Nainital district on Saturday evening, an investigating officer said on the condition of anonymity. No arrests have been made yet.“We have taken the statement of the victim’s sister and also taken cognizance of her father’s complaint. Police teams have been sent to Saharanpur and Haldwani to nab the suspects involved in the case,” the investigation officer said. He said the incident occurred at 7.30 pm in Birpur village.The girl, who lived in Birpur village, had filed a complaint against Babblu, a Bazpur resident, for raping her in January this year. Babblu constantly harassed the girl over the rape case. Under pressure, she was subsequently forced to withdrawn the case. Despite that, Babblu kept harassing her.On Saturday evening, Babblu phoned the girl and asked her to meet him in a field outside the village. The girl took her sister along to meet him. When the two sisters arrived at the meeting spot, Babblu along with three friends overpowered them.Babblu then took out a big knife and severed the head of the girl, even as his three friends held her sister, preventing her from raising an alarm. The four escaped after the killing, and the girl’s sister ran back to the house and informed the police.