"He is no longer with Citi," bank spokeswoman Danielle Romero-Apsilos told Reuters.

Asked if Ramchandani, who has been based in London, had been fired amid a global investigation into possible manipulation of currency markets, Romero-Apsilos declined further comment.

Sources have said that Ramchandani came under scrutiny in the currency market probe.

Ramchandani took leave from the bank in October, a source familiar with the situation said. At that time, the source said Ramchandani had not been suspended, nor was he accused of any wrongdoing and remained a full-time employee of Citigroup (>> Citigroup Inc).

Last year, Britain's Financial Conduct Authority began a formal investigation into possible manipulation in the $5.3 trillion-a-day-global FX market. The U.S. Justice Department is also engaged in an active investigation of possible manipulation of the market, the world's largest.

Ramchandani, as of December 2012, was listed among the 13-strong member Bank of England Joint Standing Committee's chief dealers group.

The Wall Street Journal earlier on Friday reported that Ramchandani had been fired by the bank.

Citigroup is one of several banks cooperating with regulators in their investigations. Deutsche Bank (>> Deutsche Bank AG), UBS (>> UBS AG), Barclays (>> Barclays PLC) Royal Bank of Scotland (>> Royal Bank of Scotland Group plc) and Barclays (>> Barclays PLC) have all said they were cooperating with regulators scrutinizing the market.

(Additional reporting by Dan Wilchins and Gertrude Chavez-Dreyfuss; Editing by Leslie Adler)

By Daniel Bases