When Dorothy Maitland's daughter Kaelen died at just nine days old she was told there would be no ashes to scatter or bury at her funeral.
Twenty six years later she has been shown where her daughter was buried in a mass grave.
She told ITV Daybreak: "You trust these people, and you think you're being told the truth".
More top news
Mr Blavatnik, whose empire includes the Warner Music Group, has an estimated fortune of £13.17bn according to the Sunday Times Rich List.
Find out what to expect from the weather if you are running in the big race in London or watching from the sidelines.
It will be a soggy start to the weekend and temperatures will drop making it feel colder than in recent days.