Three people including a man and two teenaged girl allegedly committed suicide in separate incidents in Sadar and Shreenagar upazilas on Saturday and Sunday.
The dead were identified as Arpita Akhter Dipa, 13, a student of class VII of Baghra Swarup Chandra High School in Shreenagar, Sanjita Mondol, wife of Dhalu Mondon, an expatriate living in Singapore, and Didar Hossain, 30, of Nayagaon Madhyapara in Sadar upazila.
In Shreenagar, Arpita and her mother Selina Akhter, 30, took poison following a quarrel between them at about 10am, leaving both of in a critical condition.
Arpita died on way to hospital while her mother was given treatment.
The reason behind their taking poison could not be known immediately.
Meanwhile, Sanjita killed herself by hanging from the ceiling of her house at village Baroikhali in Shreenagar upazila on Saturday night.
In Sadar upazila, Didar Hossain allegedly committed suicide by hanging himself from the ceiling at about 2pm.
Family sources said Didar returned from Korea a year ago and was jobless since then.