Separately, Hezbollah launched three drones towards Israel, the IDF reported, which it said were intercepted by Israel’s air force before they crossed the border.
The two countries remain under a precarious semi-permanent ceasefire, which took effect on 16 April and was extended by three weeks on Thursday last week.
Under the deal, Israel retains its “right to take all necessary measures in self-defence, at any time, against planned, imminent, or ongoing attacks”.
Speaking at a government meeting, Israeli Prime Minister Benjamin Netanyahu said the IDF is “active, and it is acting with force” in Lebanon, stating Hezbollah’s actions are “disintegrating the ceasefire”.
“We are acting vigorously according to the rules we agreed upon with the United States, and incidentally, with Lebanon as well. This means freedom of action, not only to respond to attacks, which is obvious, but to thwart immediate threats and also to neutralise emerging threats,” he said.
Sunday’s activity came after the IDF said it struck Hezbollah “military structures” overnight, and accused the Iran-backed group of launching two explosive unmanned aerial vehicles (UAVs) towards Israel.
Both Israel and Hezbollah have reported attacks from one another since the ceasefire came into place, accusing each other of violating the agreement.
On Saturday, Netanyahu ordered the Israeli military to “vigorously attack Hezbollah targets” in Lebanon.
At least six people were killed in strikes on southern Lebanon on the same day.