Two Defense Ministry employees were lightly injured Tuesday after an explosive device detonated near the security fence in the Gilboa area.
The two noticed a suspicious object on the fence near the town of Meirav, and when they approached, the device detonated. The victims were treated at the scene and evacuated to the hospital.
The IDF is searching for the terrorists.
Earlier this year, Israeli citizens arriving for their usual Friday prayers at Joshua's Altar discovered an explosive device had been planted between the stones of the ancient holy site.
The charge, which was described as extremely powerful, was apparently intended to be detonated during visits by Jews to the site believed to be where the Biblical Prophet Joshua built an altar on Mount Ebal when the Israelites first entered the Land of Israel more than 3,000 years ago.
Security forces were called to the scene, and a bomb disposal squad neutralized the explosive.