Panchagarh: A man killed his parents by stabbing them with sharp knives in Panchagarh on Sunday afternoon.

Police said Manjurul Hasan Santo, in his thirties, possibly killed Mizanur Rahman and his wife Rina Parvin, both are in their sixties, over an argument in their house at Puratan Camp area in the town of Panchagarh.

Police officer-in-charge Mominul Islam said Mizanur Rahman, a retired Sugar Mills officer, and Rina Parvin were having meal when Shanto attacked them.

Policemen from the station headquarters heard the parents shouting for help as the family lives just beside the police station.

Sub-inspector Arif, assistant sub-inspector Enamul Haq and Nasima Begum, wife of constable Mahbub, went to the spot and tried to stop Shanto, but he also attacked and injured them.

Later, several other policemen rushed to the spot and caught the killer.

They took the parents to Sadar Hospital, where the doctors declared them dead.

Hospital doctor Farhana Taslima said Nasima’s condition was critical and she was send to Rangpur Medical College Hospital for better treatment.

Shanto, a father of one, works as a Cane Development Assistant in Panchagarh Sugar Mills Limited. Neighbours said he was suffering from mental problem from last few years.

Police recovered the bodies and sent those to Sadar Hospital morgue for post-mortem examinations.