Lebanese attackers targeted an IDF patrol with an explosive device near the Israeli-Lebanese border in the Har Dov area Friday evening. Israel’s Channel 2 said Hezbollah was believed to be responsible.

Three Israeli soldiers were taken to a hospital to “rule out” any internal injuries from the blast, according to Israel Radio. The IDF fired on several targets across the border in retaliation, including tank fire at a Hezbollah position in the Lebanese village Kfar Kileh.

Residents in the area of Har Dov reported hearing two loud explosions.

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Hezbollah’s Al-Manar TV station said that Israeli forces had fired shells into the area of Kfar Chouba, north of the border. There were no injuries reported.

The army said it was investigating the circumstances surrounding the incident.

Residents of northern Israel, from Kiryat Shmona eastward to the Golan Heights, were cautioned to stay away from the border.

The Lebanese army declared a state of alert, according to Israel’s Channel 1 News, and eyewitnesses reported seeing increased UNIFIL patrols in the border area late in the evening.