"The accused identified as Mohammad Vaseem and Mohammad Nazar allegedly sodomised the 20-year-old boy, who is also mentally weak, some three months back and prepared a video clip," Investigating Officer Ajit Singh said here.
They continued sodomising him for three months, threatening to circulate the video clip if he objected.
The boy's father Mohammad Asal lodged a case against the duo yesterday with Ramganj police station after he came to know of the incident.
Asal also produced a video clip following which the accused were arrested, he added.