Russia is set to expel an Irish diplomat in retaliation for the Irish government's "act of solidarity" following the poisoning of former Russian agent Sergei Skripal and his daughter Yulia.
Earlier this week, Taoiseach Leo Varadkar announced Ireland would expel one Russian diplomat over the incident, joining more than 20 countries across the EU and internationally.
Irish Minister for Foreign Affairs Simon Coveney said he had met with the Russian ambassador and informed him the accreditation of one of his members of staff with diplomatic status would be terminated.
Sergei Skripal was poisoned with a nerve agent in Salisbury, England on March 4.
RTE reports Russia has informed the Irish Department for Foreign Affairs one diplomat has been instructed to leave the country.
Mr Coveney said the decision was regrettable.