The Russian Prosecutor General's Office said international observers monitoring the December 4 elections in Russia committed no violations, the Central Election Commission (CEC) said on its website.
CEC Chairman Vlaimir Churov requested a probe into possible violations of the electoral law by a delegation of the Council of Europe Parliamentary Assembly. He did not elaborate.
A letter by Russian Deputy Prosecutor General Sabir Kekhlerov, published on the CEC website on Wednesday, states that "no violations of the electoral law were found in the actions of the PACE delegation".
The probe was likely into a statement by Tiny Kox, the head of the PACE mission that visited Russia on an invitation from the State Duma on December 6-12. Kox was critical of Russia's election campaign, saying it lacked "an impartial referee."
According to Russian law, international observers are allowed to make statements about the electoral campaign only after the vote is over in all Russian time zones.
However, the delegation came on an invitation from the lower chamber of the Russian parliament and was not officially vested with the international observers' status.
OSCE observers said on December 5 that, despite the lack of a level playing field, Russian voters made use of their right to express their choice.