alleged deterioration of city infrastructure, growing corruption, and crime during this time. In the 1996 mayoral election, Sobchak was opposed by his former first deputy Vladimir Yakovlev and lost by a margin of 1.2%. The major pitch of Yakovlev's campaign was that Sobchak's patronage of the arts (with city money) and involvement in federal politics prevented him from solving the real problems of the city. After falling out with Sobchak, Yury Shutov wrote the book Heart of a Dog () as a criticism of Sobchak in 1991. Emigration and return In 1997, a criminal investigation started against Sobchak. He was accused of irregularities in the privatization of his own apartment, his elder daughter's apartment, and his wife's art studio. By the standards of the 1990s in Russia, the allegations were relatively minor (although the alleged losses for city finances were still in the tens of thousands of dollars). Thus, Sobchak's supporters saw the criminal proceedings as a political repression. According to Ksenia Sobchak, this campaign was started in 1995 from Moscow to prevent her father from running in future presidential elections. On 7 November 1997, Sobchak flew to Paris on a private plane without passport processing on the Russian side. The formal reason for his departure was medical treatment in a Paris hospital for his heart condition, but Sobchak never checked in at the hospital. Between 1997 and 1999, he lived the typical life of a political émigré in Paris. In June 1999, his friend Vladimir Putin became much stronger politically (in a few weeks he became the Prime Minister of Russia), and he was able to make the prosecutors drop the charges against Sobchak. On 12 June 1999, Sobchak returned to Russia. After his return, Sobchak became a very active supporter of Putin in his quest for the Russian presidency. Death On 17 February 2000, Putin met with Sobchak and urged him to travel to Kaliningrad to support his election campaign. Sobchak traveled there, accompanied by two assistants who also served as his bodyguards. On 20 February 2000, Sobchak died suddenly in the town of Svetlogorsk of the Kaliningrad Oblast. The initial suspected cause of death was a heart attack, but the findings of two medical experts were contradictory. A criminal investigation of Sobchak's death as a possible "premeditated murder with aggravating circumstances" was opened only on 6 May 2000, more than two months later. After three months, the