The Arab League denounced Lebanon's Fatah Islam group, calling it a terrorist organization on Wednesday. In a statement released in Cairo, the Arab League said that it had full support in the Lebanese Armed Forces' ability to restore calm in the region.
Fatah Islam, which took up residence in the Palestinian Nahr el-Bared refugee camp late last year, has vowed to fight a "life or death battle."
Nearly 50 combatants have been confirmed killed in the fighting, but civilian casualties are not known because relief workers and officials have had limited access into the camp.
AP contributed to this report.
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