Security sources said the Egyptian army killed Saturday 13 Wilayat Sinai (Sinai Province) terrorist group militants in North Sinai cities of Sheikh Zuweid and Al-Arish, Al Bawaba News reported. In the same context, the sources added the military thwarted a terrorist offensive against a police checkpoint stationed at Al Wahshy area in Sheikh Zuweid. Since September 2013, the Egyptian army has been carrying out an ongoing military campaign against Wilayat Sinai, formerly known as Ansar Bayt Al Maqdis, after it had claimed responsibility for several attacks targeting Egyptian military and police personnel.