In Moscow in 2000, Alexander Nikolaevich Yakovlev announced that Wallenberg had been executed in 1947 in Lubyanka prison. He claimed that Vladimir Kryuchkov, the former Soviet secret police chief, told him about the shooting in a private conversation. The statement did not explain why Wallenberg was killed or why the government had lied about it. General Pavel Sudoplatov claimed that Raoul Wallenberg died after being poisoned by Grigory Mairanovsky, an NKVD chemist and torturer. In 2000, Russian prosecutor Vladimir Ustinov signed a verdict posthumously rehabilitating Wallenberg and his driver, Langfelder, as "victims of political repression". A number of files pertinent to Wallenberg were turned over to the chief rabbi of Russia by the Russian government in September 2007. The items were slated to be housed at the Jewish Museum and Tolerance Center in Moscow, which opened in 2012.