Intense fighting is raging between troops and Islamist militants at a Palestinian refugee camp in
At least nine civilians have died in the clashes at Nahr al-Bared camp, near
Thick plumes of smoke are choking the sky over the camp as soldiers attack the militants with tanks and artillery.
Fatah al-Islam, a group accused of links to al-Qaeda and
A spokesman for the group, Abu Salim, told French news agency AFP: "The army is not only opening fire on us, it is shelling blindly.
"If this continues, we will carry the battle outside the city of
Failed ceasefire
Red Cross officials have appealed for a truce to let aid agencies reach those worst affected by the violence.
A planned two-hour ceasefire on Monday ended after just a few minutes, with clashes resuming before United Nations and Red Cross vehicles could enter the camp.
Medical workers have only been able to evacuate a few of the many injured civilians trapped inside the camp and water supplies have been hit in the clashes.
The UN Secretary-General's special envoy, Terje Roed-Larson, condemned the violence as he met Egyptian President Hosni Mubarak after presenting a report on
"We both are deeply concerned about the situation in
Bank robbers
The fighting, which began on Monday, is the bloodiest internal conflict in Lebanon since the civil war ended 17 years ago.
On Sunday, 50 people were killed at the camp, which houses about 40,000 Palestinian refugees.
More than 20 soldiers and 20 militants were killed, as well as an unconfirmed number of civilians, in clashes around the camp.
The clashes erupted when security forces tried to arrest suspects in a bank robbery. Militants from Fatah al-Islam then attacked army posts at the entrances to the camp.
The Lebanese army regained control of the camp's perimeter but clashes have continued.
Civilian casualties have not been confirmed by the Lebanese authorities which, under a 38-year-old deal, are not allowed to go into the camp.
Nahr al-Bared has been under scrutiny since two bus bombings in a Christian area of Beirut in February, blamed on Fatah al-Islam militants based in the camp.
Fatah al-Islam is a radical Palestinian splinter group alleged to have links with al-Qaeda. Lebanese officials also believe it has ties to Syrian intelligence. Other Palestinian groups have distanced themselves from Fatah al-Islam.
There are rival theories about what lies behind the latest violence, says the BBC's Roger Hardy.
Government ministers suspect
PHOTO CAPTION
Smoke rises from the camp as fighting continued on Monday