A couple allegedly committed suicide in their house at Borail village in Mohadevpur upazila of Naogaon district early Thursday.
The deceased were identified as Sum0n Ali, 40, son of Abdur Razzak, and his newly married second wife Golapi Begum, 30.
Family sources said day labourer Sumon recently got married to Golapi Begum without the consent of his first wife Khadiza Akter.
Khadija went to her father's house on Tuesday. Taking this opportunity, Sumon brought her younger wife Golapi home. When Khadiza came to know this, she returned home on Wednesday afternoon and got into a quarrel with Sumon and Golapi. Around 9 pm, Sumon and Golapi consumed gas tablets following the altercation.
Family members took them to Naogaon 250-bed hospital around 11 pm. Later, Golapi died around midnight and Sumon died around 2 am while undergoing treatment at the hospital.
Dr Abu Ansari, a medical officer of the hospital, said that their condition was critical since they were brought to the hospital. Though we prepared to refer them for better treatment, the victims' family members did not want to take them anywhere else.
Officer-in-Charge (OC) of Mahadevpur police station Ruhul Amin said the bodies would be handed over to their family after due process.