Twin bomb threats hit Indian airliners on opposite sides of the globe on Tuesday, forcing an emergency landing in the Arctic and fighter jets to scramble in Asia – the latest in a series of similar hoax scares for the country’s airlines.

Indian airlines have faced “a number of threats in recent days,” all of which have been found to be hoaxes, flag carrier Air India said in a statement Tuesday, as authorities in New Delhi and around the world investigate the string of false bomb warnings.

On Tuesday, an Air India flight from New Delhi to Chicago made an emergency landing in Iqaluit, Canada’s northernmost city. All 211 passengers and crew were relocated to the airport, Canadian police said.

Air India flight 127 was the “subject of a security threat posted online” and diverted “as a precautionary measure,” the airline said.

In a separate incident Tuesday, Singapore scrambled two Air Force F-15 fighter jets to escort an Air India Express passenger plane away from populated areas before landing at the city state’s Changi Airport, the Singaporean defense minister said on social platform X.

Flight AXB684 was enroute to Singapore from the southern Indian city of Madurai when the airline received an email that there was a bomb onboard, minister Ng Eng Hen said.

The threat prompted Singapore to activate its ground-based air defense systems and explosive ordnance disposal, and the plane was handed to airport police upon arrival, Ng said, adding that investigations are ongoing.

Multiple flights by Indian carriers have been delayed or diverted due to false bomb threats since Monday. They include domestic flights on low-cost airlines as well as international flights. The threats have appeared to come from emails or social media posts.

Low-cost carrier SpiceJet also said it received a bomb threat to a flight to Mumbai from the northern city of Darbhanga on Tuesday.

“The aircraft landed safely at Mumbai Airport and was directed to an isolation bay as a precautionary measure,” SpiceJet said in a statement, adding that after security checks the flight was cleared for further operations.

Though it remains unclear whether the threats are connected, or what the motive may be, Air India said they could not be dismissed.

“As a responsible airline operator all threats are taken seriously,” the airline said, adding it was working with authorities to ensure the perpetrators are “held accountable for the disruption and inconvenience caused to passengers.”

The Air India emergency landing in Canada comes as tensions rise between the two countries after Canada expelled six Indian diplomats, including the high commissioner, on Monday.

Canada has accused agents of the Indian government of being linked to homicides, harassment and other “acts of violence” against Sikh separatists in the country. India called the accusations “preposterous” and in turn expelled six Canadian diplomats.

While there is no indication that the bomb hoaxes are linked to the diplomatic spat, threats to Air India flights in Canada have revived painful memories of the 1985 bombing of Air India flight 182 by Sikh extremists, the worst terrorist attack in Canada’s history. The flight from Montreal to New Delhi exploded off the coast of Ireland, killing all 329 people on board, including more than 250 Canadians.

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