Russian opposition leader Alexey Navalny has left Omsk, Siberia, and is now in Berlin, Germany, for further medical care.<br />CNN reports the 44-year-old lawyer and anti-corruption blogger felt gravely ill on a flight to Moscow from Tomsk on Thursday, in a suspected poisoning.<br />Navalny, 44, is now in a coma, but it took until Friday for Russian doctors to give his team permission to move him.<br />On Friday, the deputy head physician at the hospital in Tomsk said no poisons were found in Navalny's blood or urine.<br />However, Navalny's team claims Omsk transport police have detected a 'deadly substance' that poses a threat to his life and the lives of those around him.<br />The team explained the transport police said this is the reason why the hospital initially did not allow Navalny to be moved right away.