MOSCOW (AP) — A Russian court has charged one of the Kremlin's most vocal foreign critics, British financier and human rights activist William Browder, with creating an international criminal syndicate.

The court calls for his extradition to Russia and a two-month period of arrest.

Browder, once a major foreign investor in Russia, ran afoul of the government in the late 2000s while investigating an alleged large-scale tax fraud scheme with his lawyer Sergei Magnitsky.

Authorities seized Browder's company, Hermitage Capital, and denied him entry to Russia. Magnitsky was thrown in a Moscow prison, where he died in 2009.

Browder has since campaigned globally for sanctions against Russian human rights violators. Russia has placed him on the Interpol wanted list.