Prosecutors looking for the elusive practical owner of the sunken Sewol-ho ferry say they will make all effort to bring him in by week's end.
In a briefing held Sunday, the leader of the Sewol-ho investigation task force said a special squad of more than 40 detectives would be formed to track Yoo Byung-eun down and arrest him.
He said Yoo and his family have mocked the government and challenged authority in defying orders to come in for questioning.
The 73-year-old is suspected of tax evasion and embezzlement of millions of dollars from company affiliates owned by him and members of his family.
Prosecutors believe his illegal actions contributed to the sinking of the Sewol-ho ferry.
Yoo is presumed to be holed up inside a religious compound his family owns in Gyeonggi-do province.
The area is currently surrounded by supporters of Yoo, who are blocking off authorities from entering.
The prosecution has said it is considering raiding the compound.
Arrest warrants for Yoo's second son and eldest daughter, both of whom are residing abroad, have been issued after the two failed to appear for questioning.
Yoo's eldest son, who was involved in the day-to-day operations of the company that owned the Sewol-ho ferry, has also refused to cooperate with prosecutors.
His whereabouts are unknown.
Over a month has passed since the Sewol-ho ferry capsized off the southwestern coast of Korea.
Shin Se-min, Arirang News.