Alexei Navalny - a Russian anti-corruption activist and notorious critic of Vladimir Putin - is in hospital fighting a coma after alleged tea poisoning.
Navalny was returning from Siberia when his plane had to make an emergency landing in order to have the activist sent directly to a hospital in Omsk.
Suspicions are still being investigated as to who may have targeted Navalny who remains in Omsk in a state too critical to relocate.