Alexei Navalny sits on the plane prior to a flight to Moscow, at the Airport Berlin Brandenburg (BER) in Schoenefeld, near Berlin, Germany, Sunday, Jan. 17, 2021. Leading Kremlin critic Alexei Navalny flew home to Russia on Sunday after recovering in Germany from his poisoning in August with a nerve agent. (AP Photo/Mstyslav Chernov)

The United States imposed sanctions on Tuesday on Russian individuals and entities after concluding that Russia attempted to kill opposition figure Alexei Navalny with a nerve agent, senior Biden administration officials said.

The officials, speaking to reporters on a conference call, said the moves were being taken in coordination with the European Union. They reiterated President Joe Biden’s call for Russia to release Navalny from prison.

Reporting by Steve Holland, Arshad Mohammed, Humeyra Pamuk and Nandita Bose; Editing by Chizu Nomiyama