A former Kremlin official, Berezovsky is wanted in Russia on fraud and criminal charges that he denies.
Addressing a news briefing in Bishkek, Kongantiev said the Russian accusations were "unfounded." He said Moscow had so far produced no evidence that Berezovsky visited Kyrgyzstan.
The Kyrgyz opposition claims the former Russian magnate was in the country for secret talks with President Kurmanbek Bakiev.
Bakiev has denied ever meeting with Berezovsky.
The Tulip Revolution
ONE YEAR AGO: Click on the image to view RFE/RL's archive of coverage of Kyrgyzstan's Tulip Revolution from the beginning, including biographical sketches of the key players and photo galleries of the demonstrations.
See RFE/RL's special review of the March 2005 Kyrgyz events:
THE COMPLETE KYRGYZSTAN: To view an archive of all of RFE/RL's coverage of Kyrgyzstan, click here.