The attack on the outskirts of Lebanon’s capital was the second in less than a week, raising fears that a cease-fire between Israel and Hezbollah could unravel.

An already fragile ceasefire between Israel and the Lebanese militant group Hezbollah appeared to be on shakier ground after rockets fired from Lebanon into northern Israel triggered Israeli airstrikes in the suburbs of Beirut.

The leader of Lebanon’s Hezbollah group has warned that if Israel’s attacks on Lebanon continue and the Lebanese state does not act to stop them, the group will eventually resort to other alternatives.