Local DJ Mike Kasem, 40, is worried sick.
His father, US radio legend Casey Kasem, has been missing since May 6.
The older Mr Kasem suffers from Parkinson’s disease and was looked after in a Santa Monica hospital in the US.
Casey, 82, is said to be worth US$80 million (S$100 million).
According to media reports, the children of Casey’s first wife and his present wife, Jean, have been locked in a battle over access to the former star of American Top 40.
Mike told The New Paper he last saw his father in December, when he went home to the US for the holiday season.