First inspections of the bow of a South Korean warship have shown that it was hit by an outside impact of considerable force, as suspicion increasingly falls on North Korea. <br/> <br/>A military official said, the Cheonan sank and was split in half after a mystery blast on March 26 close to the disputed border of the two Koreas, leaving 40 sailors confirmed dead and six others still unaccounted for. <br/> <br/>On Saturday, salvage teams took their first look at the bow section after it was hauled to the surface a day earlier, finding another body and more evidence that a strong external blast was to blame. <br/> <br/>Seoul has been careful not to point the finger directly at the North over the incident in the Yellow Sea, which has stoked already tense ties, and Pyongyang has denied it was to blame. <br/>