UBS Bond Probe Said to Look at Whether Bank Breached Tax Deal.

The article discusses the ongoing probe being conducted by U.S. investigators on the situation involving UBS, the largest Swiss bank, which avoided prosecution in February 2009 when it admitted to aiding Americans evade taxes. Topics mentioned include the investigation into UBS's use of so-called bearer securities, the new charges that prosecutors could file against UBS for violating the deferred-prosecution agreement, which expired in October 2010, and the illicitness of its bearer bonds.