Andrei Borovkov said after a visit to the Russian Prosecutor's Office that Berezovsky had been charged with embezzling 214 million rubles ($8.28 million) from national flagship air carrier Aeroflot.
In the late 1990s, Berezovsky was accused of setting up two front companies in Switzerland to divert millions of dollars from Aeroflot's coffers, but he fled prosecution and settled in the U.K., where he was granted political asylum in 2003.
The Russian Prosecutor's Office said it would take up the case after Berezovsky told The Guardian that he has bankrolled Kremlin insiders conspiring to overthrow President Vladimir Putin. It said it would complete the probe Monday to transfer the case to court.
Also Monday, Russian prosecutors would send another extradition request for Berezovsky to the British government.