Live Updates: Israel and Hamas at war after Palestinian militants launch deadly attacks from Gaza

More than 1,500 people have been killed since the Hamas militant group launched a surprise assault on Israel from Gaza early Saturday, leading Israeli Prime Minister Benjamin Netanyahu to declare "we are at war." 

An Israeli embassy spokesperson said Monday the death toll has risen to at least 900 Israelis, most of them civilians. Another 2,150 were reported wounded. More than 250 of the dead were Israelis who came under attack at the Supernova music festival near the border with Gaza when militants opened fire on the crowd. 

Israeli officials also say Hamas fighters captured more than 100 hostages, including women, children and elderly people, who were apparently taken into Gaza as captives.