SINGAPORE: Two Indian planes received email threats warning about a possible bomb on board one in Singapore and the other in Canada on Tuesday, following a false alert on Monday that diverted Air India flight from Mumbai to New York mid-air.

Singapore scrambled fighter jets to escort Air India Express plane after an email warning about a possible bomb on board, the city-state`s defence minister said.

`Air India Express received an email that there was a bomb on board flight AXB684 that was bound for Singapore,` Defence Minister Ng Eng Hen said in a Facebook post.

He said two air force F-15 jets were deployed to escort the jet `away from populated areas` before it landed safely at Changi Airport in the late evening.

`Our Ground Based Air Defence systems and Explosive Ordnance Disposal team were also activated. Once on the ground, the plane was handed to the airport police,` Ng added..

The next in a string of hoax bomb threats made to Indian airlines forced an Air India plane to make an emergency landing in Canada, the airline said. The passenger aircraft, flying from India`s capital New Delhi to Chicago, was the subject of `a security threat posted online` and as a `precautionary measure` has landed at Iqaluit Airport in Canada, Air India said.

The aircraft and passengers were being `rescreened as per the laid down security protocol,` the company said. `Air India notes that it, and other local airlines, have been subject to a number of threats in recent days`, it added.-Agencies