Prosecutors investigating the parent company of ferry operator Chonghaejin Marine will decide this week whether to arrest owner Yoo Byung-eon.
A prosecution official said Sunday, "If Yoo does not show up in front of prosecutors or at a court voluntarily, we will use any method to find and arrest him and his son Dae-gyun and make sure they face the maximum penalty for compounding their original offenses with their escape, no matter how long it takes."
Prosecutors have obtained a subpoena for Yoo but are wary of clashing with more than 1,000 members of a cult led by him who have formed a human barricade in front of a religious compound where he is believed to be hiding.
A judge is scheduled to issue a warrant for his arrest on Friday if he fails to show up by Thursday. A prosecution spokesman said, "We will try our best to arrest Yoo this week."