By all accounts. It was a complete failure of leadership. Local Garrisons had reportedly grown complacent after months of fairly low intensity activity on the part of Hamas. With patrols becoming less frequent.

So bot only did the attack occur. The attackers also apparently had detailed information on how and where to find Regional Military Commanders, Police Chiefs and assorted leaders and Officers. Allowing them to cripple the local response with decapitation strikes.

Meaning someone on the inside was probably passing information