The Egyptian army says it has "the situation under control" after driving back Islamist militants in North Sinai Province.
More than 100 fighters were reportedly killed in the operation along with 17 soldiers but that figure could be higher.
The ISIL affiliate in Sinai launched several near- simultaneous raids and car bombings on military checkpoints. It was their biggest assault yet in the region.
Egypt's military responded with airstrikes by F16 jets and Apache helicopters.