Fifteen Lebanese civilians on Friday infiltrated northern Israel and planted Hizballah and Lebanese flags before fleeing back across the border.
Israeli army officials said the flags were placed at a makeshift observation point several yards into Israel.
Soldiers who spotted the infiltrators refrained from opening fire after confirming that the Lebanese were unarmed an that the group was made up mostly of women and children.
Israel did file a complaint, however, noting that the infiltration, even if unarmed, was a serious violation of UN Security Council Resolution 1701, which brought an end to the 2006 Second Lebanon War. Had Israelis crossed into southern Lebanon, the reaction from the international community would have likely been far more severe.