New Delhi/IBNS: Khalistani terrorist Harpreet Singh, alias Happy Passia, who is allegedly responsible for multiple terror attacks in Punjab, has been brought to India from the United States, NDTV reported.

Happy was arrested in the US in April this year.

After Happy was arrested in California's Sacramento, he was sent to the Immigration and Customs Enforcement (ICE) custody.

The gangster, who had entered the US illegally, used burner phones to evade arrest.

As per Punjab Police, Happy is wanted in as many as 16 criminal cases.

The National Investigation Agency or NIA has named him in a chargesheet related to the 2024 grenade attack in Punjab's Chandigarh.

Happy from the US and Pakistan-based terrorist Harwinder Singh Sandhu alias Rinda were responsible for the grenade attack, NIA said.

The two provided logistical aids, terror funds, weapons and ammunition to the ground operators in Punjab. 

The attack was hurled on a house which was assumed to be occupied by a retired Punjab police officer.

As per a report by Hindustan Times, the Punjab Police busted a terror module backed by Pakistan-ISI and run by Happy and another operative named as Shamsher alias Honey.

Five including the mastermind Abhijot Singh were arrested in the case over grenade attacks on police establishments in Batala and Gurdaspur.