Gunmen fired at two Fatah activists in Southern Gaza killing one and injuring the other during Monday's early morning hours. The two men, Mohammad Abu Tuaima and Mahmoud Abu Salah, were members of the Al-Aqsa Martyrs Brigades, the military wing of the mainstream group, according to Palestinian security sources sources. Medical sources said, Abu Tuaima was instantly killed with a gunshot to the head, Abu Salah was wounded when a bullet pierced his chest. Abu Salah was taken to a nearby hospital for treatment.Palestinian radio reported that the two were attacked by members of the new security force assembled by Hamas. Two weeks ago, the same town, Absan, had witnessed clashes between Fatah and Hamas supporters which lead to the death of three people and an injury. Security forces have also said, an explosive device was planted outside a Fatah member's house, Ziad Abu Hayah, in Southern Gaza. The perpetrators hurried away in a getaway car before they were recognized. Eyewitnesses have said that clashes began between the two factions in Absan after that incident killed two people and injured several others.