(KUNA) -- Unknown gunmen shot dead a member of Osbat Al-ansar group inside Ein el-Hilweh refugee camp in Southern Lebanon, according to Lebanese and Palestinian security sources Saturday. They sources told KUNA Belal Ali Salloum, 39, was killed inside the Palestinian refugee camp at 3:00 a.m. Salloum was arrested by the Lebanese authorities for three years for carrying out bomb attacks in Sidon. He was released some four years ago.Around 70,000 people live in Ein el-Hilweh refugee camp, the largest among the 12 camps in Lebanon. Ein el-Hilweh is famous with confrontations between Palestinian factions loyal to the Palestinian Liberation Organization (PLO) and opposition groups.