London (CNN) -- Hans Kristian Rausing, the son of one of the world's richest men, appeared in court Wednesday charged with "preventing the lawful and decent burial" of his wife, Eva, UK media said. Her body was discovered in an advanced state of decomposition on the floor by a bed in an annex of the couple's central London mansion, the Press Assocation news agency said. Rausing looked frail as he appeared in the courtroom, the news agency said. His appearance came a day after he was charged by London police with preventing his wife's lawful and decent burial. Eva Rausing's body was found last week when police searched the couple's home after her husband was stopped on suspicion of driving under the influence of alcohol or drugs, and then arrested on drug charges.
@highlight
NEW: Hans Kristian Rausing is accused of preventing lawful and decent burial of his wife
@highlight
NEW: Rausing looked frail as he appeared in court, UK media say
@highlight
He's the son of one of the world's richest men
@highlight
Eva Rausing was bright, intelligent and devoted to her children, her father says
His daughter eventually recovered in the 1980s and dedicated many of her efforts to helping other addicts, he said, before marrying @placeholder, with whom she had four children.