The US Department of Justice has charged eight men from Russia and Kazakhstan with running a vast ad-fraud scheme that milked a total of $36 million (£47 million) from advertisers. Three of the accused – Aleksandr Zhukov, Sergey Ovsyannikov and Yevgeniy Timchenko – have been arrested in different countries pending extradition to the US, with Boris Timokhin, Mikhail Andreev, Denis Avdeev, Dmitry Novikov, and Aleksandr Isaev still at large, an announcement said.

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