BRITAIN said on Tuesday (19) it was in close touch with its Canadian partners about "serious allegations" from Ottawa that the Indian government was involved in the murder of a Sikh separatist leader in Canada.
"We are in close touch with our Canadian partners about these serious allegations," a government spokesperson said.
"It would be inappropriate to comment further during the ongoing investigation by the Canadian authorities."
Canada said on Monday it was "actively pursuing credible allegations" that linked Indian government agents to Hardeep Singh Nijjar's murder in British Columbia in June.
Nijjar, 45, was shot dead outside a Sikh temple on June 18 in Surrey, a Vancouver suburb with a large Sikh population, three years after India had designated him as a "terrorist".
India dismissed the accusation as "absurd and motivated" and urged Canada instead to take legal action against anti-Indian elements operating from its soil.
Canada also expelled India's top intelligence agent in the country, while New Delhi expelled a Canadian diplomat.
The spat deals a fresh blow to diplomatic ties that have been fraying for years, with New Delhi unhappy over Sikh separatist activity in Canada. It now threatens trade ties too, with talks on a proposed trade deal frozen last week.
Any involvement of a foreign government in the killing of a Canadian citizen was "an unacceptable violation of our sovereignty", Canadian prime minister Justin Trudeau told the House of Commons in an emergency statement on Monday (18).
Nijjar supported a Sikh homeland in the form of an independent, so-called state of Khalistan state in India's northern state of Punjab, the birthplace of the Sikh religion, which borders Pakistan.
On Tuesday, India's foreign ministry said it had given the Canadian diplomat five days to leave the country, without disclosing his name or rank.
"The decision reflects the government of India's growing concern at the interference of Canadian diplomats in our internal matters and their involvement in anti-India activities," it said in a statement.
The ministry had summoned Cameron MacKay, Canada's high commissioner, or ambassador, in New Delhi to notify him of the move, it added.
Earlier, New Delhi urged Ottawa to take action against anti-Indian elements in Canada.
"Allegations of the government of India's involvement in any act of violence in Canada are absurd and motivated," it said, adding that similar accusations made by Trudeau to prime minister Narendra Modi had been "completely rejected".
It said the "unsubstantiated allegations" sought to shift focus away from "Khalistani terrorists and extremists who have been provided shelter in Canada".
The ministry added, "We urge the government of Canada to take prompt and effective legal action against all anti-India elements operating from their soil," the ministry said.
Trudeau said he had raised the matter directly with Modi on the sidelines of G20 summit in New Delhi on Sept. 9 and 10, and had urged his government to co-operate with Canada to resolve it.
Modi, in turn, conveyed strong concern to Trudeau over recent demonstrations in Canada by Sikhs calling for an independent state.
Canada has the largest population of Sikhs outside Punjab, with about 770,000 people reporting Sikhism as their religion in the 2021 census.
Khalistan is an independent Sikh state whose creation has been sought for decades. A Sikh insurgency killed tens of thousands of people in India in the 1980s and early 1990s before it was suppressed by tough security action.
However, New Delhi has been wary of any revival, with a particular focus on small groups of Sikhs in Australia, Britain, Canada and the US, who support the separatist demand and occasionally stage protests outside its embassies.
The United States and Australia expressed "deep concern" over Canada’s accusations.
India has been particularly sensitive to Sikh protesters in Canada with some Indian analysts saying Ottawa does not stop them as Sikhs are a politically influential group there.
(Reuters)
Damian Talbot
Nirmala Sitharaman speaks at the India-UK Investor Roundtable in London last Wednesday (9). On the panel were India’s department of economic affairs secretary Ajay Seth and Kotak Mahindra Bank founder Uday Kotak
Sitharaman with Sir Keir Starmer and Rachel Reeves
Sitharaman with Jonathan Reynolds 
Sitharaman with Reynolds, Alastair King, India’s high commissioner Vikram Doraiswami and other delegates