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The Aksa Martyrs Brigades announced on Sunday that its members have succeeded in manufacturing chemical and biological weapons. In a leaflet distributed in the Gaza Strip, the group, which belongs to Palestinian Authority President Mahmoud Abbas's Fatah Party, said the weapons were the result of a three-year effort. According to the statement, the first of its kind, the group has managed to manufacture and develop at least 20 different types of biological and chemical weapons.