For more than a week, the sprawling Jenin refugee camp in the occupied West Bank has echoed to the sound of heavy gunfire – with masked snipers on roof tops and muffled explosions within its warren of alleyways.

JENIN, West Bank — The black-clad militants of Jenin refugee camp raced through sewage-filled alleyways to dodge gunfire echoing all around. “Quickly,” a Palestinian fighter urged as they weaved through a network of armed patrols and improvised barricades. “Watch out,” another warned at a juncture where an improvised explosive was being set.

Palestinian security officers were detained for refusing to take part in the controversial operation in the northern West Bank • The ban echoes Israel's ban of the Qatari media giant this year

The Palestinian Authority insists that its operation in the Jenin refugee camp was intended to maintain security and thwart any Israeli plans for the West Bank. Yet other Palestinian factions have criticized the move,