Nineteen days ago, three Israeli teenagers, trying to hitchhike home from the southern West Bank, disappeared.
Monday afternoon, volunteers from a nearby Israeli settlement discovered their bodies in an open field not far from Hebron, a city in the southern West Bank.
The teens' disappearance - which Israel blamed on Hamas - had already worsened relations between Israel and the Palestinians.
The discovery threatens to make it worse.
Prime Minister Benjamin Netanyahu said the students had been "murdered in cold blood" by people he described as "animals."
"Hamas will pay," Netanyahu warned.
Hamas, the militant fundamentalist Islamic organization that operates in the West Bank and Gaza, denied it was behind the abductions.
If Netanyahu "brings a war on Gaza," the group warned, "the gates of hell will open to him."
MORE on CNN.com