Bloomberg News reports that the Serious Fraud Office sent notices to the people in the U.S. and U.K. over the last six weeks, telling them to come in to be questioned under caution as part of a global investigation into rate-rigging, said the person, who asked not to be named because the requests are private. An interview under caution means anything a suspect says can be used as evidence in a criminal trial.
The agency is preparing to prosecute more people in the case after U.S. authorities charged three former Rabobank traders with engaging in a five-year scheme to manipulate the London interbank offered rate, or Libor.
Prosecutors and regulators around the world are investigating whether more than a dozen firms colluded to rig Libor in a number of currencies to benefit their own derivatives trades.
The recent interview requests relate to possible manipulation of dollar Libor, the person said.
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