Pro-Syrian guerrillas waged a daylong battle to capture strategic positions in a south Beirut refugee camp, the last military foothold of followers of Palestine Liberation Organization chief Yasser Arafat, Palestinian officials said.

One official said a fierce artillery barrage from guerrillas of the breakaway Fatah-Uprising group forced about 250 fighters from Arafat's Fatah faction to retreat to rear positions Wednesday inside the embattled Bourj Barajneh refugee camp.

But Arafat's men repulsed a later attempt by the pro-Syrian guerrillas to gain more ground and succeeded in recovering some of the positions they had lost.