A Class VIII girl died under mysterious circumstances in Kholahati area of Gaibandha Sadar upazila, police said on Friday.
The deceased was identified as Monalisa Akhter, 15, daughter of Hannan Mia of Paschim Komornoi area under Kholahati union. She was a student of local NG Modern High School.
According to police and Kholahati Union Parishad Chairman Masum Hakkani, Monalisa had reportedly developed a relationship with a Class IX student of the same school.
On Tuesday, the two allegedly left their homes together with the intention of getting married.
Later, Monalisa’s family filed a general diary with Sadar Police Station over her disappearance.
Following mediation by local representatives, Monalisa was brought back and taken to the nearby house of her elder sister Lima.
On Thursday night, she suddenly fell seriously ill.
Instead of taking her to hospital, the family reportedly called a local physician to the house for treatment. She died while undergoing treatment there.
Additional Superintendent of Police Biplob Kumar Kundu said police visited the scene on Friday and sent the body to Gaibandha General Hospital for autopsy.
He said the exact cause of death can be known after the post-mortem report.