While Gora Lal (27) and his two-year-old son Arman were killed, his wife Durga Devi (23) was injured when the boundary wall of their hut collapsed yesterday, he said.
The locals immediately rushed to help the victims who were taken to Government Medical College (GMC) hospital.
Gora Lal and his son were declared 'brought dead', he said, adding, condition of Durga Devi is stable.
A case has been registered and investigations started, the officer added.