Vasil Parfyankou was sentenced to four years in jail in February 2011 for participation in a mass gathering in Minsk on election night in December 2010. The gathering was questioning official results that made incumbent President Alyaksandr Lukashenka the winner.
He was released on parole in August 2011.
Hundreds of opposition activists and their supporters, including former presidential candidates were arrested for taking part in the mass protest action on December 19, 2010.
The majority of them have been sentenced to different jail terms and later released on parole.
Parfyankou is the first of them who was sent back to jail for parole violation.