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The son of Russian software tycoon Eugene Kaspersky has been kidnapped in Moscow and his abductors are demanding a 3 million euro ($4.4 million) ransom for his release, reports said on Thursday.
The Lifenews.ru news website said that unknown men abducted Ivan Kaspersky, 20, on Tuesday morning and then made the ransom demand to his father by phone.
His father, who founded the leading anti-virus firm Kaspersky Lab, then flew from London to Moscow, it said.
The Gazeta.ru website said its sources in the security forces had confirmed Ivan Kaspersky had been kidnapped, without giving further details.
The Interfax news agency, meanwhile, quoted a source as saying Ivan Kaspersky disappeared on Tuesday and has been the subject of a search by the special services and the police ever since.
There was no official confirmation of the reports.