MOSCOW, December 14 - RAPSI. The Prosecutor's Office has warned oppositionists against holding unauthorized rallies in Moscow on December 15.

Oppositionists planned to hold a "March of Freedom" on December 15. The organizers wanted to march along one of Moscow's central streets and end the rally on Lubyanka, but the mayor's office refused to allow a march to be held there and proposed an alternative route, which the oppositionists rejected.

The office has said that despite the fact that permission was not granted for the march, there are appeals to ignore the authorities' decision and take part in an unauthorized demonstration posted over the Internet.

"The Moscow Prosecutor's Office warns the organizers and individuals calling to take part in similar protests that violations of the law will not be tolerated and that liability for the consequences of unlawful conduct will follow," reads the Prosecutor's Office press release.

The last opposition protest rally was held in May, following the ascension of Vladimir Putin to his third presidential term. Although officially sanctioned, the opposition march across Moscow led to clashes with the police on May 6. Dozens of protesters and police officers were injured. The police detained over 400 rally participants. After May 6, the opposition continued its protests in the form of "people's promenades," wherein crowds of opposition activists walked peacefully together through the city in a show of opposition.

In June, investigators searched the homes of the rally organizers and participants, including those of Alexei Navalny, Sergei Udaltsov, Ilya Yashin, and Boris Nemtsov.

The Investigative Committee later opened a probe into Sergei Udaltsov, a renowned leftist figurehead, and his aides, claiming that the violence outbreak on May 6 was orchestrated by them on purpose, with the help of "outside inluences".