Toni alias Manjit, son of an alleged notorious criminal, Sushil alias Munch, had yesterday had a heated argument with one Nadeem in the civil lines area of the city, SP (City) Ombir Singh said.
Following which, Toni allegedly threatened and also made an attempt to kill Nadeem, he said.
He was arrested and a pistol along with cartridges have also been recovered from him, he added.