At least 24 militants and six soldiers were killed on Sunday, 16 October, in attacks on military outposts in North Sinai, the Egyptian military said in a statement.
The statement did not give details, but security and medical sources said about 20 members of the security forces had also been injured when more than 100 militants repeatedly attacked security outposts south of the border town of Sheikh Zuweid.
The attackers used car bombs and rocket propelled grenades (RPG), the sources said. The militants also clashed with the security forces using light weapons, the sources added.
ISIS claimed responsibility for the attacks.
On Friday, the militant group claimed an attack on security forces in the peninsula that killed at least six soldiers.
Egypt is fighting an insurgency by militants affiliated with ISIS in the Sinai Peninsula, where hundreds of soldiers and police have been killed since 2013, when the military ousted Islamist president Mohamed Mursi after mass protests.
The militants have also extended their campaign to other parts of Egypt, most recently attacking churches in Cairo and other cities with the loss of dozens of lives.
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