Russian opposition leader Alexei Navalny disappeared in prison!

There is also no official statement on whether Navalny is being transferred or not. The US also issued a statement on Navalny's release. "He should never have been imprisoned," it said. The 47-year-old Navalny is known as the strongest opposition voice against Putin.

It turned out that he was not in the same prison where he had previously stayed. In Russia, it is common for prisoners to be transferred by train to prisons in other parts of the country without being heard from.

There is also no official statement on whether Navalny is being transferred or not. The US also issued a statement on Navalny's release. "He should never have been imprisoned," it said. The 47-year-old Navalny is known as the strongest opposition voice against Putin.

The Russian dissident's videos are watched by millions. While in prison last August, he was sentenced to another 19 years in prison for "creating an extremist community".