Jailed Kremlin critic Alexei Navalny has been found guilty of large-scale fraud and contempt by a Russian court, writes The Guardian.

The move on Tuesday means that Navalny, President Vladimir Putin’s most prominent critic, is likely to face a substantial extension to his jail sentence.

He is already serving a two-and-a-half year sentence at a prison camp east of Moscow for parole violations related to charges he says were fabricated to thwart his political ambitions.

A further 13 years could now be added due to the latest criminal case against him, which he has also dismissed as politically motivated.

A gaunt Navalny stood besides his lawyers in a room filled with prison security officers as the judge read out the accusations against him. The 45-year-old seemed unfazed as he flipped through court documents.