Russian opposition leader Alexei Navalny described Monday an impromptu hearing at a police station to extend his detention as "ultimate lawlessness", after he was detained entering the country from Germany.

In a video released by his spokeswoman, he asked why the hearing was being held "at a police station," describing the proceedure as evidence that the authorities had "ripped up and thrown away the Code of Penal Procedure." 

Britain's Foreign Secretary Dominic Raab on Monday condemned the arrest of Russian opposition leader Alexei Navalny as  "appalling", calling for the Kremlin critic's release.

"It is appalling that Alexey Navalny, the victim of a despicable crime, has been detained by Russian authorities," Raab wrote on Twitter. 

Russia should "immediately" release Kremlin critic Alexei Navalny, German Foreign Minister Heiko Maas said Monday after a wave of Western condemnation of his detention at a Moscow airport. 

US law enforcement agencies are screening National Guard members to make sure they do not pose a security risk during President-elect Joe Biden's inauguration, a four-star general said in comments broadcast Sunday.

Police detained top Kremlin critic Alexei Navalny on Sunday when he flew back to Russia months after barely surviving a poisoning attack, prompting a new wave of Western condemnation.

More than 80 people have been killed in two days of ongoing clashes in Sudan's restive Darfur, doctors said Sunday, just over two weeks since a long-running peacekeeping mission ended operations.

A man with a loaded handgun and more than 500 rounds of ammunition has been arrested in Washington at a security checkpoint near the U.S. Capitol, authorities said.

Russian police detained top allies of Alexei Navalny at a Moscow airport on Sunday as the Kremlin critic was flying home from Germany under threat of imminent arrest.

Guatemalan police fired tear gas Sunday to disperse thousands of migrants headed for the United States on foot, and soldiers beat back a group that tried to push through barriers, AFP journalists witnessed.

At least two crew members have died after a cargo ship sank in bad weather in the Black Sea off Turkey on Sunday, local officials said.