The victim killed in a shooting in a Pleasanton neighborhood on Friday was identified as the adult suspect's father, police said.

The shooting happened at about 9:30 p.m. at a home on Helpert Court near Inglewood Drive in the city's Val Vista neighborhood. The Pleasanton Police Department said officers found a man who had been shot, and he was taken to a hospital where he later died.

At the scene, 28-year-old Pleasanton resident Lucas Chan was arrested for the shooting. On Monday evening, police identified the victim as his 61-year-old father, Lance Chan.

According to police, witnesses told officers that the shooting was preceded by an argument.

After officers responded, they discovered several improvised explosive devices at the Chan home, which were removed by the Alameda County Sher

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