South Korean search teams have suspended their efforts to reach missing sailors on a sunken warship because of poor weather conditions reports the BBC on March 31st. The move comes a day after a diver died searching the wreckage of the ship Cheonan, close to the border with North Korea. Forty-six sailors have been missing since an explosion split the ship in two late on March 26. The diver who died reportedly lost consciousness under water. Fifty-eight crewmembers were rescued. Officials say others could have survived in water-tight cabins in its stern, and oxygen has been piped through cracks in the vessel to increase their chances of survival. But divers who reached the ship on March 29 reported hearing no response when they tapped on the hull. Defense Minister Kim Tae-Young has said that the explosion could have been caused by a mine laid by the North during the 1950-53 Korean War – or intentionally sent floating towards the South Korean vessel by the communist state.