Four Israeli soldiers were wounded in an explosion on the border with Lebanon during the night, an army spokesman said on Wednesday.
The troops were "carrying out nocturnal activities in the Lebanese border area when the explosion occurred," the spokesman said, adding that the wounded had been hospitalised.
He did not specify the cause of the blast or say whether it was inside Lebanese or Israeli territory.
Prime Minister Benjamin Netanyahu mentioned the incident during a visit to the south of Israel but gave no details.
"Our soldiers defend us and our borders, which is what they were doing last night. We will continue to react to defend Israel's borders," he was quoted by military radio as saying.