U.S. Treasury officials have arrived in South Korea to discuss ways to stop North Korea's alleged illegal financial activities.
Daniel Glaser, deputy assistant secretary for terrorist financing and financial crimes, will stay in Seoul until Tuesday to discuss North Korea's counterfeiting of U.S. currency and money laundering.
Glaser visited Hong Kong and Macau from Tuesday through Friday as part of a larger Asian tour that also includes stops in Beijing, and Tokyo.
The United States has slapped sanctions on companies it suspects of aiding North Korea in counterfeiting, money laundering and the drug trade. U.S. officials have also blacklisted eight North Korean companies in connection with weapons proliferation.
North Korea says it will boycott six-part nuclear disarmament talks until the sanctions are lifted.
Some information for this story provided by Reuters and AP.