The Los Angeles Times said that Nemtsov was "Once seen as the inspiring hope for Russian democracy in the early years of the post-Soviet era.".
Former first vice premier of Russia under president Boris Yeltsinat the end of the 1990s.
He was shot six times from a passing vehicle while he walked on a bridge near the Kremlin in Red Square. He walked with Yelena Alexeyeva, Interior Ministry representative, but she wasn't hit in the assassination.
He was a political protégé of Russian President Boris Yeltsin. He was a former Russian Deputy Prime Minister, and a current member of the Duma.
He is survived by his estranged wife and their four children.