Prosecutors found two bags containing W830 million and US$160,000 in cash when they raided a summer cottage in Suncheon, South Jeolla Province in May where ferry owner Yoo Byung-eon was hiding (US$1=W1,029).
The bags were tagged with numbers 4, 5 and 6, suggesting that there are more bags somewhere else. Some suspect that a couple of bags were somehow handed over to Yoo's eldest son Dae-gyun, who has gone underground but is believed to be hiding somewhere in Korea.
Yoo's other children are overseas.
There is also speculation that the vast amounts of cash Yoo carried could have motivated someone to murder him, though forensic investigators have found no signs of foul play on the badly decomposed body.