A man and his wife died from electrocution in Kawkhali upazila of the district yesterday.
The deceased are Azahar Ali Khan, 75, and his wife Renu Begum, 60, of Kathaliya village in the upazila.
The elderly couple's two-year-old grandson Yeasin, who also sustained injury during the incident, is now undergoing treatment at hospital.
Yeasin's father Rezaul Karim said his mother first came in contact with a snapped live electric wire at their courtyard around 11:00am.
Seeing her, Azahar rushed there and tried to save his wife but he too got injured.
At that time, Yasin, who was playing there, also came in contact with his grandparents and sustain injuries.
Hearing screams, neighbors rescued them and took them to Kawkhali Upazila Health Complex where the doctors declared Azahar and Renu dead.
Yeasin was later sent to Barishal Sher-e-Bangla Medical College Hospital for better treatment, Kawkahli Upazila Nirbahi Officer Khaleda Khatun Rekha said.