U.S. District Judge Sidney Stein of the Southern District of New York granted Monday motions to dismiss claims that some of the world's biggest banks manipulated the London Interbank Offered Rate pegged to the Swiss Franc over a 10-year period ending in 2011.

In Sonterra Capital Master Fund v. Credit Suisse Group AG,15-cv-00871, Credit Suisse, the Royal Bank of Scotland, UBS and others were accused by investors at Sonterra Capital Master Fund and others as part of a class suit to have, among other allegations, manipulated the international trading rate to help their own trading positions.

The lawsuit stems from settlements a number of the banks entered into with U.S. and European regulators over LIBOR manipulation allegations. The settlements exceeded $7 billion paid by various financial institutions. Stein noted that this was just one of a number of LIBOR-related suits filed in recent years in the jurisdiction, including other claims over Euro- and Japanese yen-based manipulation.