The deceased was identified as Limu Akter Lamia, daughter of Shaheb Ali of the area.
Police have arrested Ali’s tenants Sumon Mia and his wife Mili Begum hailing from Bogura.
The couple had an altercation with Ali over payment of Tk 5,000 rent, Monowar Hossain, officer-in-charge of Kaliakoir Police Station, said quoting locals.
On Tuesday night, Sumon and Mili took Lamia to an abandoned house and murdered her and dumped her body in the nearby water body.
The girl’s parents and neighbours searched for her as she did not return home.
During their search, people noticed that Sumon was standing in water and asked them to look for the girl elsewhere.
People became suspicious and searched the place where Sumon was standing and found Lamia’s body.
Police recovered the body and sent it to Shaheed Tajuddin Medical College Hospital and arrested the couple.
During primary interrogation, the couple admitted to murdering the schoolgirl and dumping her body.
Read Also: School teacher stabbed dead in Chandpur