When will this end? That has to be the question on Charles Prince's mind. In Seoul, Citigroup Global Markets was raided by four prosecutors and 20 law enforcement officials who walked away with boxes of documents related to Lone Star, a controversial private equity fund. Citigroup Global Markets managed Lone Star's deal to buy a stake in the Korea Exchange Bank in 2003. This is certainly another PR hit on the international front. Citigroup has taken many steps--including some major executives shifts--to fix some well-publicized problems in Japan, London and elsewhere that had given the bank a rogue-ish image. This one isn't as bad as the others, but it is hardly good news.

For more on this incident:
- Here's an update from AP
- Citigroup's other international moves. Article