A Search and Rescue operation by the Indian Coast Guard is underway.
Four bodies have been recovered so far, with one of them being identified as Pankaj Garg, deputy general manager, ONGC.
The Indian Coast Guard (ICG), which launched a Search and Rescue (SAR) operation, confirmed that the helicopter had crashed into the Arabian Sea.
Babu, Jose Anthony, Pankaj Garg and P. Shrinivasan — all deputy general managers at ONGC posted at off shore rig operations.
Manufactured in 2010, the helicopter was a Dauphin-make AS-365 NE chopper, registered with the Directorate General of Civil Aviation (DGCA) in February 2011.