MOSCOW — The Czech president has bolstered Russia's arguments that it had nothing to do with a nerve agent attack in Britain that caused international outrage.

Russian officials on Friday welcomed the comments by Milos Zeman that his country produced a small amount of the same type of nerve gas used to poison an ex-spy and his daughter in Britain.

Russian President Vladimir Putin's spokesman Dmitry Peskov called it a "clear illustration of the groundless stance the British authorities have taken."

The Czech president is known for pro-Russia views, but the Czech Republic joined other western countries in expelling Russian diplomats as a result of the poisoning.

Peskov reiterated Russian arguments that other countries could have produced the nerve agent used against Sergei Skripal and his daughter.

Britain blames Russia, and international inspectors have confirmed Britain's findings.