[link to finance.yahoo.com]


Federal authorities are using taped phone conversations to build criminal cases related to the multibillion-dollar trading loss at JPMorgan Chase, focusing on calls in which employees openly discussed how to value the troubled bets in a favorable way.
Investigators are looking into the actions of four people who previously worked for the team based in London responsible for the $6 billion loss, according to officials briefed on the case. The Federal Bureau of Investigation could make some arrests in the next several months, said one person who spoke on the condition of anonymity because the inquiry was ongoing.