The US has placed Viktor Orbán’s chief of staff under sanctions for alleged corruption, the highest-ranking Hungarian official to be blacklisted since the fall of Communism.

On Tuesday, a top Hungarian government official and adviser to Prime Minister Viktor Orban was sanctioned for alleged corrupt activity by the United States, according to the U.S. Department of State.

Antal Rogan is the first high-ranking Hungarian official sanctioned by the U.S. under the Magnitsky Act, which targets individuals involved in serious human rights abuses and corruption.

The US Treasury Department has imposed sanctions on Antal Rogan, a senior Hungarian government official and one of Hungary’s Prime Minister Viktor Orbán's closest associates. Source: a statement by the US Treasury Department,