Abu Dhabi Commercial Bank has filed a lawsuit against two US banks and two rating agencies over losses from a collapsed $6bn structured investment vehicle, formerly managed by London-based hedge fund Cheyne Capital.

In the suit in a US court, the bank, which is majority owned by the largest of the United Arab Emirates, is seeking unspecified damages from Morgan Stanley, Bank of New York Mellon, Moody’s Investors Services and Standard & Poor’s.