Documents exclusively obtained by NBC News show that Hamas created detailed plans to target elementary schools and a youth center in the Israeli kibbutz of Kfar Sa’ad, to “kill as many people as possible,” seize hostages and quickly move them into the Gaza Strip.

The attack plans, which are labeled “top secret” in Arabic, appear to be orders for two highly trained Hamas units to surround and infiltrate villages and target places where civilians, including children, gather. Israeli authorities are still determining the death toll in Kfar Sa’ad.

The documents were found on the bodies of Hamas terrorists by Israeli first responders and shared with NBC News.