Signaling it could further escalate its response, the Israeli military said it would "respond severely to the morning's attack."
However, the Israeli military said it was still looking into who was responsible for Saturday's cross-border launches towards the northern border town of Metula. Hezbollah did not immediately respond to a Reuters request for comment.
Under the November ceasefire deal, Hezbollah was to have no weapons in southern Lebanon, Israeli troops were to withdraw from the region, and Lebanese army troops were to deploy into the area.
The agreement specifies that Lebanon's government is responsible for dismantling all military infrastructure in southern Lebanon and confiscating all unauthorized arms.