Ukraine’s counterintelligence agency has arrested the principal translator of the country’s prime minister, accusing him of spying for Russia. The translator has been identified as Stanislav Yezhov, who has served as a translator for two consecutive Ukrainian prime ministers. As part of his job, Yezhov has been present at nearly all high-level meetings between Ukraine’s Prime Minister, Volodymyr Groysman, and foreign leaders since 2016, when Groysman assumed his executive post. In the last year alone, Yezhov accompanied the Ukrainian prime minister during official trips to Washington, London and Berlin. Before translating for Groysman, Yezhov is thought to have served as an interpreter for Viktor Yanukovych, Ukraine’s former President. Yanukovych, a pro-Russian politician, occupied that office from 2010 until his ousting from power in 2014, as a result of the 2014 Ukrainian revolution.

On Wednesday, the Security Service of Ukraine (SBU), the country’s main counterintelligence agency, released a statement announcing that “an official” in the Ukrainian state had been arrested in the capital Kiev on Saturday, December 16. The SBU statement said that the official had “access to sensitive government information” and that he had operated in the service “of an adversary state for a long period”. The statement then identified the “adversary state” as Russia. Yezhov’s name and profession were not included in the SBU statement. But Ukrainian government officials later revealed it. According to subsequent local media reports, Yezhov was recruited by Russian intelligence in 2014, when he was posted at the Ukrainian embassy in Washington, DC. Prior to that post, Yezhov is believed to have served at the Ukrainian embassy in Slovenia.

The Russians allegedly trained him and provided him with specially designed collection technology, which he then used to gather intelligence and communicate it to his Russian handlers. Speaking on Ukrainian television, Anton Gerashchenko, advisor to Arsen Avakov, the country’s Minister of Internal Affairs, said that Yezhov had worked for Russian intelligence “for at least two years, possibly longer”. Yezhov is now reportedly facing charges of treason. The government of Russia has not issued any statements about Yezhov’s arrest.