:::TITLE:::This is testing (temporary entry).

Mr Berezovsky had made his fortune importing Mercedes cars into Russia in the 1990s

The exiled Russian tycoon Boris Berezovsky has been found dead at his home in Surrey.

The circumstances of the death of the 67-year-old - a wanted man in Russia, and an opponent of President Vladimir Putin - are not yet known.

A former Kremlin power-broker whose fortunes declined under Mr Putin, Mr Berezovsky emigrated to the UK in 2000.

Last year, he lost a £3bn ($4.7bn) damages claim against Chelsea Football Club owner Roman Abramovich.

Mr Berezovsky claimed he had been intimidated by Mr Abramovich into selling shares in Russian oil giant Sibneft for a "fraction of their true worth".

The allegations were completely rejected by the London Commercial Court judge, who called Mr Berozovsky an "inherently unreliable" witness.

BBC world affairs reporter Richard Galpin said sources have told him that Mr Berezovsky was depressed after the loss of the court case and was under financial pressure.

The tycoon's wealth is thought to have considerably diminished in recent years, leaving him struggling to pay debts in the wake of costly court cases.