Thousands of people attended the first day of an auction of vehicles owned by indebted Saudi Arabian tycoon Maan al-Sanea. Officials say the sale will go towards repaying about 18 billion riyals (US$4.8 billion) owed to creditors. The businessman was detained by authorities last year for unpaid debt dating back to 2009 when his company, Saad Group, defaulted on payments. The first phase of the auction was launched this week, with around 900 vehicles including lorries, buses, diggers, forklift trucks and golf carts. Later stages of the process will include property, as well as machinery, ceramics and furniture. Prospective buyers were mainly businessmen from local construction companies and other contractors. Money raised from the first phase of the auction will go towards repaying creditors. Priority for the repayment will first go to repaying unpaid workers, vendors and other companies owed money will be given next priority, with banks at a later stage.