An army helicopter with Indian Chief of Defence Staff (CDS) General Bipin Rawat on board crashed in Tamil Nadu on Wednesday, killing four on the spot.

Around nine people were on board the chopper that was flying from Sulur Airbase to Wellington, according to Indian media reports.

Three officials have been rescued thus far while a hunt is on for the fourth person, Hindustan Times quoted an official as saying. The injured have been taken to Wellington cantonment in Nilgiris.

Reports said Bipin Rawat was accompanied by his staff and some family members in the Mi-series helicopter.

The Indian Air Force (IAF) confirmed the crash and the presence of CDS Rawat on board.

“An IAF Mi-17V5 helicopter, with CDS Gen Bipin Rawat on board, met with an accident today near Coonoor, Tamil Nadu. An Inquiry has been ordered to ascertain the cause of the accident,” the IAF said.