Russian opposition activist Alexei Navalny has been detained briefly by police in Moscow.
The anti-corruption blogger was dragged away as he addressed supporters outside the city’s electoral commission where he submitted his registration papers to run for mayor of Moscow.
Nalvalny was forced on board a police bus and his supporters blocked the vehicle from leaving.
He was then released.
The 37-year-old is currently embroiled in an embezzlement trial where it is alleged he took 400,000 euros from a state timber firm.
Navalny faces a six year jail term if found guilty.
He denies the charges and says the case is politically motivated.
The verdict is due next week.