Who killed Vlad Listyev?

Who killed Vlad Listyev? According to the author of the book, the former Prosecutor General of the Russian Federation, Yuri Skuratov, the leaves was at the epicenter of political and criminal showdowns. He stood across the throat not only among mafia structures, but also among the powerful state elite. They tried to buy him first, then break it, and when neither one nor the other was killed, he was killed. The book is quite reliably and convincingly given the answer to the question: who killed Vlad?
However, this book is not a strictly documentary work, and some heroes in it are fictitious. In the afterword, Yu. Skuratov writes: “The investigation is therefore not completed, it continues, and for obvious reasons I cannot say much openly. Therefore, he chose a special form of the narrative - the genre of the novel, where it would be possible to combine genuine with fictional, real surnames with the invented. But almost every invented has its own real prototype. "