Shin Bet says 21-year-olds from Umm al-Fahm sought to travel to Nigeria where 'intense fighting' occurs; Bedouin man planned to fight for group in Israel

Two Arab Israelis from central city of Umm al-Fahm identified as gunmen responsible for deadly attack that left two dead; second apparently ISIS-related attack in a week

Walid Abu Madiam, 20, from Rahat, was arrested in the Old City earlier this month; threatened his wife so she wouldn't reveal his plan