Detectives detained a friend of Stamford University student Rubaiyat Sharmin Rumpa, who was found dead in an alley under mysterious circumstances, for interrogation over her death.

The detainee is Saikat. He was taken to the Minto Road office of the Detective Branch of Dhaka Metropolitan Police (DMP), said DMP Deputy Commissioner (Media) Masudur Rahman.

He said a DB team detained Saikat based on secret information.

The DMP official, however, did not provide details of the detainee.

The body of Rumpa, 22, a second-year English student of Siddheswari branch of the private university, was recovered from an alley of the area on Wednesday night.

Police sent her body to Dhaka Medical College Hospital morgue as an unidentified one. Later, her family members identified the body on Thursday evening.

On Thursday morning, police filed a murder case with Ramna Police Station in this connection.

Claiming that Rumpa, daughter of police Inspector Rokan Uddin, was murdered, her family members and fellows demanded arrest of the perpetrators.