An elderly man died after the bomb with which he was trying to kill his son exploded near him. The incident took place the Indian city of Kolkata at 3:30pm on Friday.
Doctors declared Sheikh Matlab the father dead on arrival and son Sheikh Nazir is in a critical condition.
Local media reported Sheikh Matlab often returned home drunk and this triggered arguments in the family.
On Friday, when Sheikh Nazir returned home from work he got into an argument with his father after he saw him intoxicated. When the quarrel escalated, Sheikh Matlab attacked his son with a crude bomb, reports said.
Sheikh Nazir tried stopping his father but the bomb fell on the spot and exploded. The father and son were seriously injured in the blast.
Neighbours rushed to the scene when they heard the explosion and the father-son duo was taken to a hospital in critical condition. Later, the doctors declared Sheikh Matlab dead.
The police are now investigating how Sheikh Matlab got hold of the bomb. Police teams searched the entire neighbourhood to see if there were any more bombs stored.