A tribunal yesterday sentenced a man to death and another person to life term imprisonment for killing a college student and dismembering her body into seven pieces in 2017.

The condemned convict is Alamgir Hossain Palash, 35, a lecturer of Ghatbaria Ideal College and son of Latif Hawladar of Mirzaganj upazila in Patuakhali district while the lifer is BiplobTalukdar, 40, an advocate and a resident of Amtoli municipality area.

The tribunal also sentenced Riajul Islam Reaz, 27, another accused in the case, to seven years imprisonment.

According to the prosecution, Mala, a class XI student of Kalapara Mozahar Uddin Biswas College and daughter of Abdul Mannan of Gudighata village in Sadar upazila, had an affair with Palash.

On October 22, 2017, Palash took Mala to his brother-in-law Biplob's house where he killed Mala with the help of Biplab and Reaz on October 24. Later, they dismembered her body into seven pieces.