Despite Abbas's call for a peaceful solution, attacks by militant groups continued after his election, in a direct challenge to his authority. The Palestinian Islamic Jihad Movement in Palestine launched a raid in Gaza on 12 January 2005, that killed one and wounded three Israeli military personnel. On 13 January, Palestinians from the Al-Aqsa Martyrs' Brigades, Hamas, and the Popular Resistance Committees launched a suicide attack on the Karni crossing, killing six Israelis. As a result, Israel shut down the damaged terminal and broke off relations with Abbas and the Palestinian Authority, stating that Abbas must now show a gesture of peace by attempting to stop such attacks. Abbas was formally sworn in as the President of the Palestinian National Authority in a ceremony held on 15 January, in the West Bank town of Ramallah.