March 30 (UPI) -- A United Nations peacekeeper from Indonesia was killed and another was critically injured when a projectile exploded in southern Lebanon , officials said Monday. The peacekeeper, who served with the United Nations Interim Force in Lebanon, was killed Sunday night near Adchit Al Qusayr, close to Lebanon's southern border with Israel, UNIFIL said in a statement . The second peacekeeper of unknown nationality was critically injured, it said. Israel and Lebanon-based Hezbollah ,