Opposition leader Angus Taylor has pledged to deport up to 65,000 visa overstayers as part of a sweeping overhaul of Australia’s immigration system, warning that student and asylum pathways are being “exploited”.

Letters seen by media outlets warn some applicants that they “must leave Canada as soon as possible” if found ineligible, or risk facing a deportation order.

In a joint statement backed by more than 30 organisations, it warned that previous protests framed as peaceful had “led to harassment, intimidation, and violence against Hindu Canadians, devotees, and temple management”.

Baltej Singh was arrested at Auckland Airport while attempting to board a flight to Dubai, carrying more than $10,000 in cash.

Breaching Australian sanctions laws can result in penalties of up to 10 years’ jail and significant fines.

The rule follows several high-profile crashes involving foreign-born drivers last year which officials cited as justification for tightening requirements.

The Canadian Security Intelligence Service (CSIS) identified Canada-based Khalistani extremists as an ongoing national security threat and a driver of foreign interference.

Investigators cited social media posts and a chest tattoo depicting an AK-47 rifle, which they said corresponded with the gang’s symbol.

In memory of Nancy Grewal, the the Hindu Canadian Foundation declared 3 March as “Anti‑Khalistan Day, a movement by Canadians united against terrorism.”

Police Chief Michael Pearce said investigators believed it was “not a random act of violence” and was being treated as an “intentional act” against Grewal.