ISIS terrorist snuck into Gaza Strip through Hamas tunnels, Israel says
COGAT tells Saudi news site that the ISIS operative was due to undergo military training in Gaza.
Palestinian Hamas militants take part in a rally in memory of their seven comrades, who were killed when a tunnel collapsed close to the Gaza Strip's eastern border with Israel(photo credit: REUTERS)ByYASSER OKBI/ MAARIV HASHAVUAUpdated: