New Delhi, April 18 -- Gangster-turned-terrorist Harpreet Singh alias Happy Passia, wanted in connection with multiple terror attacks across Punjab and who is alleged to have collaborated with Pakistan's ISI and Khalistani group BKI, has been arrested in the US, officials said Friday.

Passia alias Jora, who had illegally entered the US, was arrested by the FBI and US Immigration and Customs Enforcement's Enforcement and Removal Operations in Sacramento, the US federal law enforcement agency said.

"Today, Harpreet Singh, an alleged terrorist responsible for terror attacks in Punjab, India, was arrested by the #FBI & #ERO in Sacramento. Linked to two international terrorist groups, he entered the US illegally and used burner phones to eva...