The British authorities have arrested a financial trader Navinder Singh Sarao on 4 charges at the request of the United States. The U.S. Justice Department wants him extradited of allegations he manipulated the U.S. stock markets in May, 2010, causing an event known as the flash crash. Here's our economics correspondent, Andrew Walker."The U.S. Department of Justice accuses Mr. Sarao of manipulation by placing large orders to sell financial futures related to the U.S. stock market. Although the orders would generally not be carried out, they did still affect market prices, the Department argues, and they contributed to the flash crash of May, 2010, when the Dow Jones Index fell by 600 points within 5 minutes. ____________________" World news from the BBC. 应美国的请求,英国当局以4项罪名拘捕了一名叫纳维德`辛格`萨劳的金融交易员.美国司法部要求引渡他回国.萨劳被控在2010年5月操控美股市场,引发了一场名为"闪电崩盘"的事件.我们的财经记者安德鲁`沃克带来报道."美国司法部指控萨劳通过下达大额订单卖出与美股市场有关的金融期货来操纵股市.司法部表示,尽管那些订单一般不会成交,但也对股价造成了影响,进而促使2010年5月"闪电崩盘"的发生.当时道琼斯指数在5分钟内大跌600点.___________________"BBC全球新闻.