LATEST: A major research and saving operation is underway in Christchurch tonight as rescuers work frantically to release scores of people trapped in the quake's rubble, as the last toll rises. Today's earthquake in Christchurch has claimed at least 65 lives and dozens more are injured in what Prime Minister John Key says "may easily be New Zealand's darkest day". At least 65 people are dead after the shallow 6.
