MOSCOW, April 9 - RAPSI. A book by former military intelligence colonel Vladimir Kvachkov, titled "The Main Special Operation Is Still to Come," has been recognized as extremist, the Prosecutor General's Office announced on Tuesday.

Kvachkov, who was acquitted of the alleged attempt to kill former RAO UES CEO Anatoly Chubais in 2005, was found guilty on February 8 of organizing an armed coup and was sentenced to 13 years in prison and one year of custodial restraint.

Kvachkov is thought to have masterminded plans to oust the government with a small group of followers.

The retired officer denied the charges, claiming that they lacked legitimate basis. He said the accusations that he recruited members of his People's Liberation Front of Russia and armed them with crossbows in order to carry out a coup were based on the testimony of a front member accused of extremism.

A search in Kvachkov's flat revealed CDs titled "Death to Occupiers and Traitors," books such as "The Psychology of Global Domination" and "I Am a Russian Working for the Russian Cause," numerous booklets and leaflets, as well as items with the insignia of the Minin and Pozharsky public militia group which Kvachkov led.

The prosecutor's office of the Vladimir Region has examined the contents of Kvachkov's book and has concluded that it "calls for the use of force to change the constitutional regime and destroy the integrity of the Russian Federation." "Furthermore, the book advocates the idea that certain groups of people are inferior based on their ethnicity or political beliefs and is degrading to human dignity," the statement reads.

The court ruled that the book be added to the federal list of extremist materials.