At least 22 killed in unprecedented Hamas attack in Israel; prime minister says country is "at war"

The ruling Hamas militant group in the Gaza Strip carried out an unprecedented, multi-front attack on Israel at daybreak Saturday, firing thousands of rockets as dozens of Hamas fighters infiltrated the heavily fortified border in several locations by air, land and sea and catching the country off-guard on a major holiday.

Israel's national rescue service says at least 22 people have been killed and hundreds wounded. The numbers make the operation the deadliest in Israeli territory in years. There have been reports of many more casualties on both sides, but authorities did not immediately release details. 

Israeli media reported that dozens of people were hospitalized in southern Israel. The Palestinian Health Ministry in Gaza reported injuries among "many citizens" without giving numbers and loudspeakers on mosques broadcast prayers of mourning for killed militants.