Official : 10 Yemeni militants came to Egypt two months before Rafah attack . The militants were smuggled into Sinai from Sudan among groups of African migrants . `` We hope to capture them in our raids , '' official says . The intelligence officers were aware of their presence , '' Menei told CNN . - Egyptian security forces have arrested a number of suspected Islamic State members and sympathizers since the start of Egypt's military operation against IS last month.
Official : 10 Yemeni militants came to Egypt two months before Rafah attack . The militants were smuggled into Sinai from Sudan among groups of African migrants . `` We hope to capture them in our raids , '' official says . - Egyptian security forces have arrested a number of suspected Islamic State members and sympathizers since the start of Egypt's military operation against IS last month.