At least four passengers have been reportedly dead after an Indian Airforce helicopter crashed on Wednesday with the country’s top military official on board.

This development was disclosed by the Indian Air Force, after they confirmed that the Chief of Defense Staff Gen. Bipin Rawat was one of 14 people on board when the helicopter crashed.

According to the IAF, Rawat’s condition wasn’t immediately clear when the helicopter which was en route from Sulur to the town of Wellington in Tamil Nadu, crashed.

Reports from the state broadcaster Doordarshan News and Press Trust of India, a news agency cooperatively owned by Indian newspapers, the cause of the crash and details of other passengers are not yet known,

So far, at least four bodies have been recovered from the crash site, while three others rescued and moved to a hospital, Doordarshan reports.

Meanwhile, there is an ongoing process to ascertain the cause of the crash as the IAF said “an inquiry has been ordered to ascertain the cause of the accident.”

On Rawat’s career, he was the Chief of Army Staff, before he got appointed as India’s Chief of Defense Staff in December 2019.