A Palestinian policeman dispels residents near the scene of the gunbattle in the northern West Bank city of Qalqilya on June 4, 2009. Three Hamas militants and a Palestinian policeman were killed in gunbattles between Hamas militants and Palestinian security forces in Qalqilya on Thursday. [Xinhua]

A Palestinian policeman patrols near the scene of the gunbattle in the northern West Bank city of Qalqilya on June 4, 2009. [Xinhua]