Indian airlines company Jet Airways is close to securing at least 4,200 crore rupees ($604 million) in an investment round.

Jet Airways noted the investments are expected to come from its parent company, Etihad Airways PJSC, and the Naresh Goyal-led promoter group.

The deal requires a new investor to inject between $229.9 million and $273 million for a stake of about 20 percent in Jet Airways.

Moreso, a group of lenders headed by the State Bank of India will invest an extra $143.8 million to take its eventual equity holding to 29.5 percent.