South Korea 's Yonhap news agency quotes the report as saying . The full report retains the conclusion found in the preliminary report . The torpedo did not hit the ship , but its shock wave split the Cheonan in two , it said . Questions remain ; North Korea has denied any involvement .
The full report retains the conclusion found in the preliminary report . The torpedo did not hit the ship , but its shock wave split the Cheonan in two , it said . Questions remain ; North Korea has denied any involvement .