Islamic State group terrorists ambushed a checkpoint in the northern Sinai Peninsula on Saturday, killing at least five troops from the security forces, officials said, according to The Associated Press.

At least six other troops were wounded in the attack in the town of Sheikh Zuweid and taken to a military hospital in the Mediterranean city of el-Arish.

Security personnel killed three terrorists in the firefight, and the area was reinforced, the officials added, speaking on condition of anonymity because they were not authorized to brief the media.

Egypt has been fighting an insurgency in the Sinai Peninsula for several years, which at times has spilled over into other parts of the country. Most of the attacks during this time period have been claimed by the Sinai Province, the ISIS affiliate in Egypt.

The country has been under a state of emergency since April of 2018, after two suicide bombings at churches claimed by ISIS killed at least 45 people in the cities of Tanta and Alexandria.

In February of 2018, Egypt launched operation “Sinai 2018” in an effort to rid the Sinai Peninsula of Islamic terrorists.