A case was filed against Fardin Iftekhar Dihan in connection with the murder of a 17-year-old after rape, at a flat in Dhaka's Kalabagan area yesterday.
Victim's father filed the case with Kalabagan Police Station last night, said Abul Hasan, assistant commissioner (New Market Zone) of Dhaka Metropolitan Police.
"We interrogated three others, who were picked up from the hospital (where the victim was taken) last night and are investigating their involvement. If they are found to be involved, we will implicate them in the case, otherwise we will release them upon receiving undertaking," he said.
In the case statement, the complainant alleged that Fardin tricked his daughter to go to his flat and raped her when his family members were not home.
Due to rape, the victim bled profusely and was unconscious. Fardin then took her to hospital to deflect blame, the victim's father alleged.
Police earlier said they learnt about the incident after Fardin drove the girl to Anwar Khan Modern Hospital yesterday afternoon.
Doctors at the hospital said she was brought dead.
Three friends of the youth, who went to the hospital, were also held.
Victim's mother said her daughter went out yesterday morning, telling her that she was going to a friend's home to bring some worksheets provided by a coaching centre.
Around 1:00pm, one of the youths called her over phone and told her that her daughter suddenly fell sick and that he was taking her to the hospital.
The mother saw the body after arriving at the hospital.