The Naresh Goyal-promoted private carrier named Chief Financial Officer Ravishankar Gopalakrishnan as Acting CEO for the time being.
"I have enjoyed my time at Jet Airways working with the Chairman, the management team and the wonderful staff. I am confident that the company will be successful in the future," Toomey said in a late night release.
Toomey was appointed the airline CEO only last June on a three-year contract. It is, however, not yet known what led to the sudden exit of Toomey.
Prior to joining the Indian carrier, Toomey had served as President and Chief Executive of Air New Zealand Group and CEO of Airlines PNG in Papua New Guinea.
Toomey, an Australian, was made the Chief Executive after the then CEO Nikos Kardassis parted ways with airline over reported differences with Goyal on the issue of Jet's stake sale to the Gulf carrier Etihad.
Kardassis' resignation was announced immediately after Jet agreed to sell a 24 per cent stake for Rs 2,058 crore to Etihad last April. The deal was finally concluded last November, though it has been challenged in the Supreme Court.
