A senior manager at HSBC Holdings Plc. has been arrested in New York and charged along with a former foreign exchange executive for engaging in a scheme to defraud one of the bank’s clients in a $3.5 billion currency transaction.

Mark Johnson, HSBC’s global head of foreign exchange cash trading in London, and Stuart Scott, the bank’s former head of cash trading for Europe, the Middle East and Africa, were charged with wire fraud conspiracy in a criminal complaint filed in federal court in Brooklyn, New York.

Johnson was arrested at John F. Kennedy International Airport on Tuesday night, a Federal Bureau of Investigation spokeswoman said. He is expected to appear in court on Wednesday afternoon. Scott has not been arrested.

Lawyers for the two men could not be immediately identified.

The case is related to a years-long U.S. Justice Department probe of foreign-exchange rigging at global banks, and marked the first time U.S. prosecutors had brought criminal charges against individuals, a person familiar with the matter said.

The probe led to four banks last year pleading guilty to conspiring to manipulate currency prices. HSBC was not part of those criminal cases, but in 2014 agreed to pay $618 million to resolve related probes by U.S. and British regulators.

The charges came a day after the Federal Reserve Board said it was banning Matthew Gardiner, a former FX trader at Barclays PLC and at UBS AG, from participating in the banking industry for manipulating pricing benchmarks.