Search suspended for oil tycoon lost at sea

The mother of a wealthy Brazilian businessman who went missing last week has applied to seize control of his fortune.

The search for Guma Aguiar, a multi-millionaire energy tycoon, has reportedly been called off, five days after he was last seen.

Mr Aguiar, a prominent donor to Jewish and Israeli causes, is the chief executive of Leor Energy and is based in Fort Lauderdale. On the morning of June 20 his private yacht washed ashore on the Florida coast. Mr Aguiar has not been seen since the previous evening.

In a further twist to the mystery over his disappearance, his mother has asked the courts to make her the temporary guardian of Aguiar's $100 million fortune. She claimed that her son, a father of four, suffers from a "severe bipolar disorder".

Court documents show Ellen Aguiar claiming that her son "may be in a delusion state or be suffering from psychosis or otherwise may have disappeared at sea".

Police investigating the case said it was too early to draw any conclusions about what had happened to him.

Last updated: 11:01am, June 25 2012