Israeli security forces gather around a flatbed truck at the site of a vehicle attack in Jerusalem on Sunday, January 8. AHMAD GHARABLI/AFP/Getty Images

A truck plowed into a group of soldiers in Jerusalem Sunday, killing four and injuring at least 13. AHMAD GHARABLI/AFP/Getty Images

The white truck at right was the one used in the attack. MENAHEM KAHANA/AFP/Getty Images

Israeli soldiers console each other at the site of the attack, which occurred on a popular promenade overlooking the walled Old City of Jerusalem. AHMAD GHARABLI/AFP/Getty Images

Israeli security forces and emergency personnel gather at the site of the vehicle attack. The attacker was shot and killed; note the bullet holes in the truck's windshield. AHMAD GHARABLI/AFP/Getty Images

A distraught Israeli soldier is consoled at the site of Sunday's attack. MENAHEM KAHANA/AFP/Getty Images

A group of soldiers had gotten off a bus and were getting organized with their bags when "the terrorist took the opportunity, ramming his truck into the group," Israel Police spokesman Micky Rosenfeld said. AHMAD GHARABLI/AFP/Getty Images

Israeli medics carry a covered body from the scene of the attack. AHMAD GHARABLI/AFP/Getty Images