Russia's opposition leader Alexei Navalny poisoned by toxic tea goes into come

Moscow: Russian opposition politician Alexei Navalny is in a coma and on a ventilator in an intensive care unit in Siberia after falling ill from suspected poisoning that his allies believe is linked to his political activity.

The 44-year-old critic of Russia's President Vladimir Putin felt unwell on a flight back to Moscow from Tomsk, a city in Siberia, and was taken to a hospital after the plane made an emergency landing in Omsk, Navalny's spokeswoman, Kira Yarmysh, said on Twitter. She told the Echo Moskvy radio station that he must have consumed something from tea he drank at an airport cafe before boarding the plane early Thursday. During the flight, Navalny started sweating and asked her to talk to him so that he could "focus on the sound of a voice." He then went to the bathroom and lost consciousness, and has been in a coma in grave condition ever since. Other opposition figures were quick to suggest Kremlin involvement.

"We are sure that the only people that have the capability to target Navalny or myself are Russian security services with definite clearance from Russia's political leadership," Pyotr Verzilov, a member of Russia's protest group Pussy Riot who ended up in intensive care after suspected poisoning in 2018, told The Associated Press. "We believe that Putin definitely is a person who gives that go-ahead in this situation."

Doctors at the Omsk ambulance hospital, where the politician is being treated, remain tight-lipped about his diagnosis .