Israeli seminary students Naftali Frankel, Gilad Shaar and Eyal Yifrah disappeared last Thursday as they hitchhiked towards Hebron. Israeli Prime Minister Benjamin Netanyahu says Hamas is behind the kidnapping. On Monday Israeli security forces rounded up 40 members of Hamas. Palestinians threw rocks when Israeli soldiers entered the al-Jalazoun refugee camp near the West Bank city of Ramallah. Israeli troops responded with gunfire, killing a 20-year-old Palestinian and wounding another. The Israelis also launched pre-dawn raids on the West Bank city of Hebron. Lieutenant-General Benny Gantz, chief of Israel's Armed Forces, said, ‘We have a goal, and that is to find these three boys and bring them home, and to hit Hamas as hard as possible,’ Al Jazeera reported that two  groups - ’Islamic State’ and the ‘Brigade of the Free Men of Hebron,’ have claimed responsibility for the kidnappings.