She was in a place she fully trusted—her best friend’s house—and in company she had been familiar with since she was in Class 3. But in a flat at The Belaire in Gurgaon that was like another home, an 18-year-old second-year law student was allegedly raped by her best friend’s father in the early hours of Friday while his own daughter slept in another room.

The man, who she had addressed as ‘uncle’ since she was a kid, was arrested later on Friday. Police said his daughter was present when the complaint was filed by the law student and her mother at the women’s police station, and told the officer her father must be punished.

“The student told us she believed it was pre-planned. The accused’s daughter had also come to the police station with her. She told us her father had done something unbelievable and must be punished,” the investigating officer of the case told TOI.

The rape suspect—a businessman who deals in dental implants with two offices on Sohna Road and business interests in Canada—was booked under sections 376 (rape), 506 (criminal intimidation) and 328 (causing hurt) of the IPC and sent to 14 days in judicial custody by a local court. He moved to Gurgaon with his family eight years ago and is originally from Sholapur in Maharashtra, police said. The two families were close and had gone on trips together. The girls had studied in the same school.

On Thursday evening, the Belaire-based businessman had taken his daughter and the law student out for dinner at Cyber Hub. His daughter, who studies in Canada, came home on June 27 and had invited her best friend—who studies at a reputable private university in Haryana—home.

In her complaint, the law student said her friend’s father had betrayed her trust she put in him as a father figure. “My mother only said yes to the dinner plan when I told her my friend’s father will be accompanying us to keep us safe. He took us to Cyber Hub and ordered alcohol. He forced me and his daughter to have hard drinks,” the law student said in the complaint. They returned home late.

Her friend’s mother and brother, Class XI student, was away so there was no one else in the house. Between 4am and 5am, he entered his daughter’s room where the two women were sleeping. “He woke me up, held my hands and dragged me to his room,” the law student said in her complaint. “He then locked the room from inside and raped me.”

She returned to her friend’s room, woke her up and told her what had happened. In the morning, the friend escorted her home. They spoke to the law student’s mother. Around 11am, all three went to the police station to file a complaint. The man was arrested from the Belaire flat. In court, the rape suspect claimed he was innocent and it was the law student who had come to his room in the night.