Four United Nations peacekeepers have been killed in an Israeli air strike on an observation post in southern Lebanon, the UN has said.
A bomb struck the post occupied by the peacekeepers of the Unifil force in the Khiam area, it said.
The UN in Lebanon says the Israeli air force destroyed the observer post, in which four military observers were sheltering.
It said the four, from Austria, Canada, China and Finland, had taken shelter in a bunker under the post after it was earlier shelled 14 times by Israeli artillery.
A rescue team was also shelled as it tried to clear the rubble.
"I am shocked and deeply distressed by the apparently deliberate targeting by Israeli Defence Forces of a UN Observer post in southern Lebanon," Mr Annan said in a statement from Rome.
Israeli Bomb Kills UN Observers (BBC News Online; Tuesday 25th July 2006)
Israel has also been using cluster bombs and has been accused of using phosphorous bombs which are against international law in built up areas containiing civilians. Israel Urged To Shun Cluster Bombs (BBC News Online; Tuesday 25th July 2006)