Lavrov said the USA ambassador had been informed of "retaliatory measures", saying that "they include the expulsion of the equivalent number of diplomats and our decision to withdraw permission for the functioning of the USA consulate general in Saint Petersburg".
The expulsion of diplomats on both sides has reached a scale unseen even at the height of the Cold War.
Russia has said it will expel 60 USA diplomats and close the American consulate in St. Petersburg as part of a tit-for-tat retaliation against the coordinated wave of expulsions of dozens of Russian diplomats ordered by the United States and other countries earlier this week over the poisoning of a former spy in Britain.
Russia is expelling two Italian diplomats as a tit-for-tat response to Rome's expulsion of Russian diplomats, ARMENPRESS reports, citing TASS, the Italian Foreign Ministry said in a statement on Friday.
The Russian Foreign Ministry said in a statement on Friday it was summoning the representatives of a "raft of countries" that had taken what it called unfriendly action against Russia in solidarity with Britain because of the Skripal affair.
Russian Federation has asked Britain to cut its diplomatic and technical staff in the country by a little more than fifty.
Mr Lavrov emphasised that the expulsions followed "brutal pressure" from the United States and Britain, which forced their allies to "follow the anti-Russian course".
She called Russia's actions "regrettable" and "unwarranted". The plane left London's Heathrow Airport for Moscow about three hours behind schedule.
Russian Foreign Minister Sergej Lavrov declared on Thursday that all countries that have expelled Russian diplomats will see the same number expelled from Russia. Once again, they have broken the Chemical Weapons Convention.
Mohamed Salah saves Liverpool after slack defence struggle at Palace
The rest of the first half was not much better with Liverpool looking frustrated and poor in possession. His finish from James Milner's driven cross was sharp, but from Palace's perspective, all too simple.
His 33-year-old daughter remained in the English hospital where she was being treated, and officials said Thursday that her condition had improved.
Speaking to reporters Friday, Kremlin spokesman Dmitry Peskov insisted that "Russia didn't start any diplomatic wars", and "remains open for developing good ties".
Numerous ambassadors were summoned to appear at Russia's Foreign Ministry to receive the order for expulsions from the country, amid a dispute that has devastated Russia's already tense relations with the West.
The expulsions follow the poisoning of former Russian spy Sergei Skripal and his daughter Yulia in the British city of Salisbury on March 4 by what has been described as a military-grade nerve agent. Moscow has denied accusations that it was involved in the assassination attempt.
Russia's Embassy in Canberra has accused Australia of blindly following Britain by deciding to expel its diplomats. The country is heavily dependent on Russian gas supplies and tourists.
After the Russian government announced the expulsion of U.S. diplomats, U.S. State Department spokeswoman Heather Nauert said that Moscow "should not be acting like a victim" and that the only victims in this matter were the Skripals and other people affected in Salisbury. The officials were serving at the U.S. embassy in Moscow and another two were serving at the USA consulate in Yekaterinburg.
Journalists gather outside of the US Consulate building in St. Petersburg.
Some passers-by near the U.S. Consulate cheered the expulsions.
London has become a rumored destination of choice to launder money from overseas crime and corruption "the so-called 'dirty money, '" said the Chair of the lower house Treasury Committee, Nicky Morgan, who is leading the new investigation.