A 36-year-old man due to stand trial for assisting another man to commit suicide is believed to have killed himself.
Louis Gillies, of Bank Street, Glasgow, was due to appear at Lewes Crown Court charged with aiding and abetting the suicide of Michael Gooden.
The two men had met through an internet site called Assisted Suicide Holidays.
Mr Gillies' trial was due to begin on Tuesday, but when he failed to appear at court, police went to his flat where they found a man hanging.
Police in Glasgow confirmed they were investigating the discovery of a body in a flat in Bank Street.
Mr Gooden, 35, of south London, died at Beachy Head, near Eastbourne between 20 May and 7 June, 2002.
His body was found washed up on a beach at the East Sussex resort.
Diane Chan, who was due to prosecute the case, told the court that although no formal identification had been made, a suicide note signed by Mr Gillies had been found with the body.
It's a very bleak ending to a very bleak case
She said: "This morning local police visited Mr Gillies' address in Glasgow where a male was found hanging.
"One of the Scottish officers who has met him before said he had seen the body and said the identity of the man hanged was Mr Gillies."
Judge Anthony Scott-Gall said: "It's a very bleak ending to a very bleak case."