An associate of Ukraine's deposed president says the former leader's son has died in an accident in which a vehicle plunged through the ice on Lake Baikal in Russia.

Nestor Shufrych, a deputy in Ukraine's parliament, said Sunday in a statement on Facebook that the 33-year-old Viktor Yanukovych, who had the same name as his father, was driving at the time of his death. He gave no further details.

Russian authorities haven't identified the driver who died Friday when a minibus carrying six people crashed through thin ice on the Siberian lake or confirmed reports that it was Yanukovych's son. The five passengers survived.

The former president has lived in Russia since being toppled from power last year. He also has an older son, 41-year-old Alexander, a wealthy businessman.