MOSCOW (AP) _ As part of the Kremlin's anti-graft campaign, Russia's chief prosecutor has ordered a review of corruption cases dropped in recent years, his aide said today.

Prosecutor General Yuri Skuratov has assigned top investigators to the cases, which were closed for reasons such as lawmakers' immunity from prosecution, Alexander Zvyagintsev told the Interfax news agency.

Zvyagintsev said the order came after Skuratov's meeting with President Boris Yeltsin this week on ways to stop criminals from infiltrating the country's political structure.

Yeltsin said that up to 2,500 officials had been suspected of having criminal ties and demanded that prosecutors thoroughly check all the cases.

The Kremlin's anti-corruption drive was triggered by a publication last month in the influential daily Izvestia about a city mayor in eastern Siberia who allegedly had ties to the mafia.