Billionaire arrested over wife's death

British police say they have arrested a 49-year-old man, reported to be the heir to the Tetra-Pak packaging fortune, after his wife was found dead at their luxury London home.

Officers identified the woman as Eva Kemeny and said her body was found after police conducted a search of the house she shared with her husband at Cadogan Place in the exclusive London borough of Chelsea following the man's arrest.

Metropolitan Police detained the man at a south London police station on suspicion of possession of drugs and also in connection with the death.

Officers from the Homicide and Serious Crime Command were investigating, and the death was being treated as unexplained, police said in a statement.

The man, reported to be Tetra-Pak heir Hans Kristian Rausing, later left the station in order to receive medical attention, according to the statement.

The Rausing family, headed by Mr Rausing's father Hans, is worth 4.3 billion pounds ($6.5 billion), according to this year's Sunday Times Rich List.

Mr Rausing and his wife Eva were charged in 2008 after she tried to take crack cocaine and heroin into the US embassy in London.

Police later searched the couple's house where they found crack cocaine, heroin and cocaine.

Although they were initially charged with drugs offences, prosecutors subsequently decided to drop the charges and instead give them a conditional police caution. This means they admitted possessing the drugs.

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