The Russian Federal Corrections Service has forwarded a report on the violation of house arrest terms by opposition activist Alexei Navalny to Moscow's Zamoskvoretsky District Court, Federal Corrections Service spokesperson Kristina Belousova told Interfax on Wednesday.

"A report has been drawn up on the violation of court restrictions by Alexei Navalny. It has been forwarded to a court," Belousova said.

The criminal enforcement inspectorate did not take impose any additional surveillance measures on Navalny, "as the electronic bracelet he has been provided with records his whereabouts," she said.

The Zamoskvoretsky District Court gave Navalny a suspended prison term of 3.5 years and his brother Oleg Navalny real jail time of 3.5 years on Tuesday.

The Navalny brothers had been charged with massive fraud and legalization of proceeds of the French cosmetic firm Yves Rocher and the Multiprofile Processing Company.

Navalny broke his house arrest terms by appearing on Tuesday evening in the center of Moscow, where his supporters and opponents had gathered for unsanctioned rallies.

"Police officials detained Navalny, who had violated his house arrest terms. He will be escorted to the place of his residence registration together with the Federal Corrections Service," the Moscow city police department said on Tuesday evening.