The United States is preparing new sanctions against Russia over the near-fatal poisoning of Kremlin critic Alexei Navalny, a top White House advisor warned Sunday.

Imprisoned opposition leader Navalny, President Vladimir Putin's most key opponent, was arrested in January upon returning to Russia after recovering from a poisoning he says was orchestrated by Moscow. "We are preparing another package of sanctions to apply in this case as well," Sullivan said on Sunday in an interview with CNN when asked if the administration will further pressure Moscow over Navalny.

"It will come as soon as we have developed the packages to ensure that we are getting the right targets. And when we do that, we will impose further sanctions with respect to chemical weapons," he added.

Sullivan's comments came days after President Joe Biden met with his Russian counterpart Vladimir Putin in Geneva of Switzerland, the first meeting between the two leaders since Biden took office.

Earlier In March, the Joe Biden administration announced multiple sanctions and restrictions against Russian individuals and entities over the alleged poisoning of Navalny. Meanwhile, The US intelligence community assessed that officers of Russia's Federal Security Service used a nerve agent known as Novichok to poison Navalny on August 20, 2020.

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