However, fearing arrest, the son Rajatvir Singh, an engineering graduate, committed suicide by shooting himself with a country made pistol, the police claimed.
Rajatvir's father Harpreet Singh had been arrested, the police said.
Acting on a tip off, a police team was deputed at Shekhupura on the Patiala-Rajpura Road here.
There was information that both the accused were coming towards Rajpura in separate vehicles carrying explosives, Patiala, SP(D), Harvinder Singh Virk said.
When Harpreet's vehicle was stopped near Falloli village here, explosive material was recovered, the police official claimed.
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During the search, the body of Rajatvir was found, lying on the first floor of one of the houses, the official said.
SP Virk said that Rajatvir allegedly ended his life by shooting himself with a .12 bore country made pistol as he feared arrest.
Police claimed to have recovered a pressure cooker bomb, some pipe bombs, explosive material, .12 bore pistol, .32 bore pistol, two .12 bore guns and live cartridges from the house.
An expert of team of Forensic Science Laboratory has been called to examine the explosive material.
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