For the first time, the Lebanese army has advanced into a besieged Palestinian refugee camp in the north of the country. It comes as violence erupted at another camp in the south.
Troops moved into Nahr al-Bared as their battle with al Qaeda-inspired fighters there entered its ninth week. Around 200 people have died.
It is rare for Lebanese security forces to enter a Palestinian refugee camp.
In the south at Ain al-Hilweh, Lebanon’s largest such camp, a militant was killed in what seemed to be a revenge attack.
Suspected of links with two previous murders, the man was gunned down, as a factional leader within the camp explained.
“We are using our contacts to prevent any reaction and to stop tension escalating,” he said.
However the bloodshed has further undermined stability in Lebanon, which is suffering its worst internal violence since the civil war.