Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. OSCE Calls for Russia to Reopen Probe Into Nemtsov Murder RFE/RL The Organization for Security and Cooperation in Europe (OSCE) has called on Russian authorities to reopen a criminal investigation into the murder of Boris Nemtsov, the former Russian opposition politician who was killed almost five years ago near the Kremlin. The OSCE said shortcomings in Russia's original investigation left many questions unanswered. "His death was a tragedy for Russia and had a strong impact on the political climate, spreading fear and possibly opening up for further attacks and repression," the OSCE said in a Feb. 20 report. Nemtsov was shot dead at close range on the Bolshoi Moskvoretsky Bridge, near the Kremlin in central Moscow, on Feb. 27, 2015. In June 2017, a Russian court sentenced former Chechen battalion leader Zaur Dadayev to 20 years in prison for killing Nemtsov. Four other Chechens were found guilty of involvement in the killing and sentenced to prison terms ranging from 11 to 19 years. .