Palestinian gunmen angry at the jailing of one of their leaders have used bulldozers to demolish a concrete barricade near the border between the Gaza Strip and Egypt. Some youths then ran into the no-man’s land and tried to cut through a fence. Egyptian police on the other side fired in the air, but several Palestinians managed to enter Egyptian territory. The latest unrest began after the arrest of a leader of the al-Aqsa Martyrs Brigades suspected of kidnapping Briton Kate Burton and her parents and holding them for three days.The al-Aqsa Martyrs Brigades is an offshoot of the ruling Fatah faction. On Wednesday members also ordered passengers to leave the European Union-monitored Rafah border terminal. They blocked access to the facility for more than an hour after taking over several government offices in the town. Militants also renewed rocket fire from Gaza into Israel. Security sources said two rockets struck the Israeli border town of Sderot, causing damage but no casualties.