Lebanese troops on Friday opened fire on Palestinian refugees trying to march back to their besieged camp in northern Lebanon, and wounded several, security officials said. Thousands of Palestinian refugees had fled the Nahr el-Bared camp where the army has been battling Islamic militants since May 20. Most have been sheltered since in the Beddawi camp, just 5 kilometers (3 miles) away. But with the fighting dragging on between the military and the Fatah Islam militants holed up inside Nahr el-Bared, the displaced refugees are now demanding they be allowed to return to their homes. On Friday, some 2,000 of them staged a protest at the Beddawi camp, after which some angrily tried to march to Nahr el-Bared.