Banks face more charges in US over currency and interest rate fixing

New York

THE US Justice Department is preparing a fresh round of attacks on the world's biggest banks, again questioning Wall Street's role in a broad array of financial markets.

With evidence mounting that a number of foreign and US banks colluded to alter the price of foreign currencies, prosecutors are aiming to file charges against at least one bank by the end of the year, according to interviews with lawyers. Ultimately, several banks are expected to plead guilty to resolve the investigation.

Interviews with more than a dozen lawyers open a window onto previously undisclosed aspects of an investigation that is unnerving Wall Street and the defence bar. While cases stemming from the …