"Security agencies exposed and thwarted the activity of the aforementioned organization in the Tyumen and Chelyabinsk organizations in the past two years. Over 80 of their members were exposed," Patrushev said at a meeting with heads of antiterrorist commissions in the Urals Federal District in Khanty-Mansiysk on Monday.

The number of extremist crimes grew in the Sverdlovsk, Tyumen, Kurgan and Chelyabinsk region in 2007 compared to 2006, Interfax reported quoting Patrushev.

"Thanks to timely preventive information and comprehensive preemptive measures, sabotage and terrorist attacks prepared by criminals during the State Duma and presidential electoral campaign and elections were thwarted. At the same time, the number of manifestation of terrorist and extremist actions has remained rather high. This is typical for your [the Urals] federal district as well," Patrushev said.