Russian opposition leader Alexei Navalny doused in green liquid

Associated Press
Alexei Navalny takes a selfie with supporters after an unknown assailant sprayed a bright green antiseptic on his face - AP

Alexei Navalny, the Russian opposition leader, has been doused in bright green liquid by an unknown assailant in the Siberian city of Barnaul.

Mr Navalny tweeted on Monday: "I will be opening a headquarters in Barnaul as if I am from the film The Mask! Cool. Even my teeth are green!"

He was referring to the Hollywood film that features a superhero who wears a green mask.

The green liquid, a common Russian antiseptic that remains on skin for days, was reportedly sprayed in Mr Navalny's face as he went to shake a man's hand.

Mr Navalny is currently traveling around Russia opening headquarters and campaigning to stand in the 2018 presidential elections.

A criminal conviction for fraud officially bars him from running, but supporters say the charges are politically motivated.