Two siblings died from electrocution at Jagonnathpur village in Gobindaganj upazila of the district yesterday.
The deceased were identified as Nurul Amin, 55, and his younger brother Nahid Hossan Mithu, 35, sons of Asgor Ali of the village.
Nurul Amin is headmaster of Dharma Girls' High School in the area and Nahid Hossain, an employee of Rangpur Sugar Mills.
Locals and family sources said, when Nahid was repairing a snapped wire in their residence at noon, he suddenly came in contact with a live electric wire.
At this, Nurul Amin came forward to rescue his younger brother and got electrocuted, they said.
The two brothers later died on the way to Bogra Medical College Hospital, said family members.