Prosecutors in Incheon said they have asked the U.S. and French governments to extradite the son and daughter of ferry owner Yoo Byung-eon. Authorities are taking steps to revoke their passports and have put them on Interpol's most-wanted list.
A prosecution spokesman said they are working with U.S. Homeland Security Investigations and other overseas agencies.
Prosecutors are seeking Yoo Hyuk-ki (42) and Yoo Sum-na (48) as well as two confidants of the ferry owner and part-time cult leader on charges of corruption relating to the ferry disaster off the southwest coast last month.
The U.S. has revoked the visas of the two confidants, Kim Pil-bae (76) and Kim Hye-kyung (52). They will be extradited as soon as they are found.
But Yoo Hyuk-ki has a U.S. residency permit, and Sum-na is in France on a temporary stay visa, which cannot simply be revoked.
Arrest warrants have been issued for all four, and prosecutors will arrest them as soon as they set foot on Korean soil.
Meanwhile, prosecutors arrested Park Seung-il (55), an advisor with an affiliate of Chonghaejin Marine, on charges of embezzling W12.6 billion in company money (US$1=W1,025).