DONETSK, May 25 - Scores of armed pro-Russian separatists gathered for several hours outside the gated home of Ukraine's richest man, Rinat Akhmetov, in the eastern city of Donetsk on Sunday as Ukrainians voted for a new president, Reuters reported.

Coal and steel billionaire Akhmetov, whose factories and mines employ about 300,000 people, denounced the rebels last week, accusing them of "genocide", and urged people to vote on Sunday despite intimidation and threats from the separatists.