Thousands of people follow the coffin of Boris Nemtsov during a farewell ceremony at the Andrei Sakharov Museum and Public Center in Moscow Tuesday. The charismatic Russian opposition leader and sharp critic of President Vladimir Putin was slain Feb. 27. Pavel Golovkin/Associated Press …  Zhanna, daughter of slain Russian leading opposition figure Boris Nemtsov, is consoled during his funeral in Moscow Tuesday. Tatyana Makeyeva/Reuters …  Thousands of Russians, many carrying red carnations, line up outside the Sakharov center to pay their respects to slain opposition leader Boris Nemtsov Tuesday. Dmitry Lovetsky/Associated Press …  Relatives and friends view Boris Nemtsov during a farewell ceremony inside the Sakharov center in Moscow Tuesday. Western officials have called for Russia to conduct a prompt, thorough and transparent investigation into the slaying. Russian President Vladimir Putin has ordered law-enforcement chiefs to personally oversee the probe. Pavel Golovkin/Associated Press …  Yulia Navalny, wife of Russian opposition activist Alexei Navalny, attends the mourning ceremony for Boris Nemtsov. Sergei Savostyanov/TASS/Zuma Press …  Police officers hold back mourners during a farewell ceremony for the slain opposition leader Boris Nemtsov at the Sakharov center in Moscow Tuesday. Olga Maltseva/Agence France-Presse/Getty Images …  A man in Moscow holds a picture of slain opposition leader Boris Nemtsov while other mourners wait to get inside the Sakharov center to pay their last respects. Artyom Korotayev/TASS/Zuma Press …  Relatives and friends stand at the body of slain opposition leader Boris Nemtsov before his burial at a Moscow cemetery. Alexander Utkin/Agence France-Presse/Getty Images …  Boris Nemtsov's mother, Dina Eidman, center, and other relatives stand at the coffin during the burial ceremony at Troekurovskoye cemetery in Moscow Tuesday. Ivan Sekretarev/Associated Press …  Mikhail Kasyanov, left, an opposition leader and former Russian prime minister, lays flowers at the grave of Boris Nemtsov. Maxim Shemetov/Reuters …  Mourners bear the cold to say goodbye to Boris Nemtsov Tuesday in Moscow. Sergei Ilnitsky/European Pressphoto Agency …  Kremlin Critic Boris Nemtsov Laid to Rest
Mourners including Russian government officials and business tycoons paid their respects in Moscow to Boris Nemtsov, the opposition leader gunned down near Red Square last week.