The Egyptian army released new videos showing a series of air strikes conducted against militants of the Sinai Province group -- a branch of the Islamic State of Iraq and Syria group (ISIS) based in the Sinai Peninsula. The tapes, which are available on the Facebook page of the Egyptian armed forces, show the aerial attacks on the group. It was not clear when exactly the aerial attacks took place. On Saturday, Egyptian warplanes killed 25 Islamist militants in North Sinai, security sources said, as the Egyptian president visited the province after a major escalation of the conflict there. The aerial attacks in Rafah, Al-Arish and Sheikh Zuweid came only days after militants launched a coordinated assault on military checkpoints in North Sinai, leading to day-long fighting which left more than 100 militants and 17 soldiers dead. Egypt's army is leading a a campaign against a decade-long militant insurgency in North Sinai that has spiked over the last two years. Militants have killed hundreds of police and army personnel in North Sinai, while the authorities have announced that hundreds of militants have been killed in military campaigns in the governorate.