The Permanent Mission of Russia in Strasbourg sent on Wednesday a protest to Council of Europe Secretary General Thorbjorn Jagland after a former Chechen warlord attended a PACE plenary session.
The contents of the protest were unavailable to the press.
Former Chechen militant leader Akhmed Zakayev entered the building of the Council of Europe in Strasbourg under a fictitious name on Tuesday, after the Parliamentary Assembly of the Council of Europe (PACE) adopted a draft resolution condemning Russia's policy in the North Caucasus.
The Council of Europe has yet to comment on the incident. Zakayev may have been escorted into the building by one of the European delegates.
According to the Russian delegation, Zakayev entered the building using a visitor's pass with no photograph. The delegation said Zakayev entered the building using a fictitious name as his real name was not found anywhere in the computer system.
Akhmed Zakayev has been residing in London since 2003.
Russia issued an international arrest warrant for Zakayev in 2001, has accused him of terrorist activities and repeatedly asked Britain to extradite him, but the request has invariably been refused.
STRASBOURG, June 23 (RIA Novosti)