FILE – This Monday, Nov. 30, 2009 file photo shows a portrait of lawyer Sergei Magnitsky who died in jail, as it is held by his mother Nataliya Magnitskaya, as she speaks during an exclusive interview with the AP in Moscow. Russia’s top investigative body says Monday, April 9, 2012, it’s dropped charges against a jail doctor in a high-profile prison death case. Sergei Magnitsky was imprisoned for tax evasion in 2008 and died of untreated pancreatitis in Nov. 2009. Magnitsky’s death was seen as a litmus case for President Dmitry Medvedev’s pledge to cement rule of law in Russia. (AP Photo/Alexander Zemlianichenko, File)