Egypt’s north Sinai witnessed a turbulent day on Sunday after three weeks of relative calm as the air force carried out a raid against terrorists, destroying a car south of the town of Rafah, according to security and tribal sources. Five ISIS members were killed in the attack, two of them were identified as Ibrahim al-Freihat and Mahmoud al-Jabali. In Arish, a lieutenant was also injured after an explosive device targeted an armored police vehicle at the entrance of the city. Security forces discovered three explosive devices in North Sinai that were planted on the routes usually taken by the forces. They were immediately dismantled and no injuries were reported. The security forces in northern Sinai managed Sunday to defuse and detonate nine explosive devices near the international road west of Arish, reaching the center of Bir al-Abed, without casualties. A teacher was killed and another sustained injuries when unknown assailants opened fire on their bus along the Arish-Rafah International Road. In Rafah, a soldier was injured during an armed attack on a checkpoint. For four years now, the army and police have been engaged in an extensive crackdown on extremist militant groups in northern Sinai. The extremists have have stepped up attacks since the ouster of former President Mohamed Morsi following mass demonstrations against his rule in 2013. The bloodiest attack was the "massacre of worshipers" that killed 311 victims, including 27 children, late November while they were performing Friday prayers at a mosque in the village of Rawda in Bir al-Abed. Judicially, a military court sentenced on Sunday 14 people to death on charges of involvement in terror attacks. The defendants were charged with attacking government buildings, planning to kill public figures and security officials and joining an outlawed group. The tribunal in Alexandria, north of Cairo, sentenced 24 others to 25 years in prison in the same case.