North Korea denied on Saturday it was involved in the sinking of a South Korean warship near the two countries' disputed sea border last month.
The official Korean Central News Agency (KCNA) said Seoul blamed Pyongyang for the sinking of the Cheonan warship without a thorough investigation.
The 1,200-ton corvette with 104 crew onboard sank March 26 following an unexplained explosion. Only 58 sailors were rescued, with 38 bodies recovered so far and eight still unaccounted for.
There has been speculation in the South that the ship was hit by a North Korean torpedo.