Three senior traders who were previously suspended in connection with a global probe into the currency markets have been fired by their employers, according to people familiar with the matter.

Richard Usher, formerly chief currencies dealer at JP Morgan Chase in London, was placed on paid leave in October 2013, according to people familiar with the matter. Usher was fired by the bank in the first week of October, a person familiar with the matter said, and was listed as inactive on the register of approved individuals of the UK Financial Conduct Authority as of October 6.