Who is Harpreet Singh, aka Happy Passia, Khalistan terrorist, likely to be extradited to India?

Harpreet Singh, aka Happy Passia, is set to be repatriated to India shortly. The Khalistani terrorist, wanted in several terror, extortion and violence-related cases in India, was arrested by the Federal Bureau of Investigation (FBI) and Enforcement and Removal Operations (ERO) in Sacramento. But what do we know about Passia, who is on the National Investigation Agency’s list of ‘most wanted’ suspects? 

Explainers