Hans Kristian Rausing, one of the richest men in Britain, was arrested twice in two days over illegal drugs and the mysterious death of his wife.

Rausing, who stands to inherit part of the multibillion-pound Tetra Pak packaging firm, was first arrested Monday for driving erratically in South London. On Tuesday night, he was re-arrested after police found his wife's dead body in their family home.

Here is a roundup of news highlights surrounding the case of Hans Rausing:

- At noon time on Monday, Mr Rausing was caught for erratic driving in South London, Telegraph reported. Police allegedly found him to be carrying Class A drugs.

- On Tuesday, Mr Rausing's wife Eva Rausing, 48, was found dead in their family home.

- A statement from the Scotland Yard read: "On Monday 9 July a 49-year-old man was arrested on suspicion of possession of drugs. Following a subsequent search of an address in Cadogan Place SW1, a body was found."

- Scotland Yard did not immediately identify the body, but Mr Rausing was "further arrested in connection with the death."

- It is understood there were no obvious signs of bodily harm in Mrs Rausing's remains. "The death is being treated as unexplained," said Scotland Yard.

- Reports indicate Mrs Rausing may have died of drug overdose.

- The Rausing couple has been known for their struggles with drug addiction. They met in a U.S. rehabilitation clinic in the early 1990s.

- Mrs Rausing was Eva Louise Kemeny before she got married. She was from the affluent family of a Pepsi Cola executive.

- Eva Rausing was arrested in 2008 outside the U.S. Embassy in London over possession of crack cocaine, montrealgazette.com reported.

- The couple lived in a five-storey house at Cadogan Place, one of London's most expensive residential areas just off Sloane Street, between Knightsbridge and Chelsea.

- Mr Rausing belongs to the Swedish Tetra Pak dynasty. The family's fortune is estimated at £4.5 billion, and they were ranked 12th among Britain's richest in 2011 in the Sunday Times Rich List.

- Authorities have yet to find out and release the official cause of death of Eva Rausing.

- It is understood Hans Kristian Rausing is still being held in custody at a South London police station.