An Israeli bomb destroyed a UN observer post on the border in southern Lebanon, killing two peacekeepers with two others feared dead under the rubble. UN chief Kofi Annan said Israel appeared to have struck the site deliberately. Israel's UN Ambassador Dan Gillerman expressed his "deep regret" for the deaths and denied Isarel hit the post intentionally. "I am shocked and deeply distressed by the hasty statement of the secretary-general, insinuating that Israel has deliberately targeted the UN post," he said, calling the assertions "premature and erroneous." The IDF said in response that it deeply regretted the "tragic death" of the UN personnel and vowed to investigate the incident.