4 killed after bus flips over in S. Korea

At least four people were killed and more than 40 others injured after a packed tour bus rolled onto its side on a highway near South Korea's central city of Daejeon, police said Sunday.The bus -- carrying 45 passengers -- was not speeding on Sunday morning when it suddenly swerved and flipped to its side, South Korea's Yonhap news agency cited a survivor as saying.Police said the exact cause of the accident is still under investigation."Some were pinned on top of each other on the floor after the bus flipped," the 70-year-old survivor, identified only by his surname Lee, was quoted as saying by Yonhap."I was hanging from my seat belt until I was rescued," he said.The injured have all been taken to hospital, with eight people in a critical condition.The passengers were members of a hiking club on their way to a mountain in South Chungcheong province.