Navalny 'won't be allowed to die in prison' - Russian Federation envoy to UK

Alexei Navalny

Doctors helping Navalny's family said on Saturday blood tests showed his potassium levels are "catastrophically" high, meaning that he could suffer heart failure at "any moment". Street demonstrations could symbolically start shortly after President Vladimir Putin is set to deliver his state of nation address on Wednesday.

"Allow a doctor to see my dad", tweeted Navalny's daughter, Dasha.

"Things are developing too quickly and too badly", his allies wrote in a statement on Mr Navalny's website, announcing their plans for country-wide street demonstrations that they portrayed as a bid to win him life-saving medical care and as a protest over a crackdown on his supporters. Kremlin and prison authorities have insisted that he's getting adequate care.

Mr Navalny has said prison authorities are threatening to put him in a straitjacket to force-feed him unless he accepts food.

Previously he has detailed efforts by prison authorities to lure him out of his hunger strike - including slipping candy into his pockets and grilling chicken in the prison barracks.

"Alexei Navalny is exhibiting symptoms of a severe neurological disorder - constant back pain and the loss of sensation in his legs and hands".

Navalny, Putin's most prominent opponent, was arrested in January on returning to Russian Federation after recovering from a near-fatal poisoning attack he says was orchestrated by the Kremlin.

Russian police officers guard the entrance to the penal colony N2, where Navalny is serving a two-and-a-half year prison term for violating parole.

However, his spokeswoman Kira Yarmysh has said Navalny's situation has become critical once again. "And on the weekend lawyers just can't get to him, and no one knows what will happen on Monday".

He wrote: 'I really need a doctor.

He was arrested in January when he returned to Russian Federation and jailed for two and a half years in February for parole violations he said were fabricated.

Their appeal was published by Western media including France's Le Monde this week.

Since Friday, his team has been sounding the alarm that Navalny's health is rapidly declining and warning that the threat to his life is now as serious as when he was poisoned last August. The action was widely seen as an effort by the Kremlin to strongly encourage the opposition figure to remain in exile.

Other inmates are banned from speaking with him or forced by prison authorities to inform on his every move.

Meanwhile, on Sunday, Navalny's allies put out an urgent call for his supporters to take to the streets en masse across Russian Federation on Wednesday.

FILE - National security adviser Jake Sullivan speaks during a press briefing at the White House in Washington.

MOSCOW/BELGIUM - The European Union is deeply concerned about reports that the Russian opposition politician Alexei Navalny's health in the penal colony continues to deteriorate even further.

On Saturday, President Biden described Russia's treatment of Navalny as "totally unfair" and "totally inappropriate".