Reports say source was exchanges of fire between Egypt's military and armed groups in peninsula

Terror group says Israeli response to firing of 2 projectiles is 'an extension of the aggression against the Palestinians in Jerusalem and the West Bank'

Multiple sites targeted in southern Palestinian enclave; earlier, explosive device resembling RPG found near Sde Boker

Device, which resembles RPG, is discovered by security staff at local education center, defused by police

IDF soldiers defuse booby-trapped ball discovered Thursday in open area near the border; another suspicious device found in the area Friday

Thursday alert came as military braced for Palestinian terror groups' attempts to disrupt World Holocaust Forum in Jerusalem

IDF Home Front Command says pinpoint alarms allowed half a million Israelis to go about their lives, instead of running to bomb shelters unnecessarily

Alarm on northern border comes after heavy fighting last week between Israel and Gaza terror groups, which saw some 450 projectiles fired at Jewish state

Some reports indicate Israel believes terror operatives acted independently in attack; Islamic Jihad appears to threaten Monday's Tel Aviv soccer match between Argentina-Uruguay

Terror group warns Jewish state will bear consequences of 'ongoing aggression'; leaders of Hamas, Islamic Jihad said to speak before projectiles fired towards the southern city