BlackBerry maker's shares tumble to nine-year low

Shares in BlackBerry maker Research In Motion (RIM) fell to a nine-year low after Morgan Stanley downgraded the stock, saying the company's challenges are piling up.

Research In Motion's shares closed down 75 cents, or 7.7%, to 9.11 US dollars (£5.85) on the Nasdaq. The bottom for the day was 9.01 dollars, the lowest level since 2003.