The Israeli military says troops have opened fire at a number of suspects who crossed into Israeli-controlled territory from neighboring Lebanon.

The army says the suspects fled back into Lebanon after Sunday's shooting, and the incident is being investigated.

The army did not say whether the suspects were militants or civilians, or where exactly the incident occurred.

Israel fought Hezbollah militants during a monthlong war in 2006. Since then, the sides have observed a truce, though smaller militant groups have occasionally fired rockets into Israel.