"The plane crashed around 10.30 a.m.," the official said.
"Though both the pilots ejected from the aircraft, their condition is not yet known. They have been rushed to the Air Force Command Hospital," an HAL official told IANS.
The state-run Hindustan Aeronautics Ltd (HAL) operates the military airport with the IAF and other state-run defence and aerospace agencies like DRDO (Defence Research and Development Organisation) and ADA (Aeronautical Development Agency).
Flight operations will remain suspended from February 12 to 26, an airport official said on Monday. The 15-day closure of the airport will roughly affect over 80,000 passengers, an official said.
Flight operations will resume on February 27.
Airport Chief Executive Officer (CEO) Sunil Dutt said the runway was being upgraded to increase its length from 9,000 feet to 10,400 feet to enable operation of wide-bodied aircrafts.
This would better enable air carriers to connect the city with destinations in Europe, the US and Australia in the future.
The airport is a defence facility and is controlled by the Indian Air Force (IAF) which operates a transport squadron here.
Commercial flights use the same runway at this airport, which handles nearly 30 commercial flights daily, including international flights to Dubai, Sharjah and Bangkok.
The city is linked to Delhi, Mumbai, Bengaluru, Srinagar, Jaipur and a few other cities in the domestic circuit.
The nearest civilian airports to Chandigarh are Delhi and Amritsar - both around 250 km away.
The Punjab and Haryana High Court has asked railway officials about the alternate arrangements being made by them to cater to the increased rush of passengers on various trains due to the airport closure.
Railway authorities have said that additional coaches were being added to existing trains to cater to the increased demand.
Chandigarh is linked to New Delhi through three Shatabdi Express trains from each side. Other trains link the city with Delhi and other destinations.
A statement from the Defence Ministry spokesperson said the incident occurred when the fighter jet, manned by an trainee pilot, skidded. Goa airport operates from the Indian Naval base INS Hansa.
"The fire on the aircraft is being extinguished," the spokesperson said.
B.C.H. Negi, the Airports Authority of India Director for the Goa airport, told IANS that the runway was closed for now. "It has been closed for an hour as of now."
"All the passengers and crew of the Jet Konnect flight number 7048 are safe and were brought down from the aircraft unhurt," said Pravakar Mishra, station director of Airport Authority of India (AAI) based at Rowriah Airport.
The Jet Konnect flight after landing at the airport at 1.45 pm was taking the first right turn on the runway to the parking bay when it skidded off it, after one of its rear wheels got stuck to the ground, he said.
As the wheel got stuck to the ground, the front part of the plane tipped downward. There was panic among those on-board, but the situation was saved as the engine had been switched off and the aircraft was running at limited speed. It was about 1,500 metres away from the airport lounge, the airport authority said.
The stuck aircraft was later pulled out from the ground with the help of an Indian Air Force crane and other machinery.
The flight was cancelled for technical investigation and the passengers were accommodated in local hotels, the airport authority officials added.