Tags: Citigroup Inc

Pacific Investment Management Co and other investors have sued Citigroup Inc over the bank's alleged failure to properly monitor toxic securities backed by more than $13.8 billion of mortgage loans, resulting in $2.3 billion of losses.

Goldman Sachs Group Inc has tentatively agreed to pay about $270 million to settle a lawsuit by investors, according to a source familiar with the matter.

Citigroup Inc said it has been authorized by a U.S. judge to process two Argentine debt payments, the bank said, which could ease tensions between the bank and the default-hit nation.