Criminal cases dealing with an armed attack and preparations for mass disturbances against opposition activist Leonid Razvozzhayev have been combined into one, Investigative Committee spokesman Vladimir Markin said.

"A decision has been made to combine into one two criminal cases in which Leonid Razvozzhayev is figuring. The matter involves an armed attack on a businessman in Angarsk in 1997 and preparations for mass disturbances in Moscow and other regions of Russia," Markin told Interfax on Thursday.