Police in Biswambharpur upazila, Sunamganj, arrested Humayun Ahmed, an imam of a local mosque, on Tuesday evening on allegations of raping a college student.
According to police, Ahmed developed a romantic relationship with an eleventh-grade student of Digendra Barman Government College while serving as imam.
The case filed by the victim's father alleges that Ahmed raped the student on May 24 in his room adjacent to the mosque after luring her with a marriage promise, and threatened her with a knife to keep silent.
The case also alleges a second rape on July 17 at his home, when he promised to divorce his wife and marry her.
When the victim pressed for marriage, Ahmed refused and threatened her, according to the case.
The victim's father filed the case at the Sunamganj Women and Children Repression Prevention Tribunal on July 26, and the court ordered the police station to take action.
Biswambharpur police station OC Shahin Mia said the case was registered and Ahmed was arrested, and he was to be produced before court on Wednesday.