Washington - A 13-year-old Israeli girl fatally stabbed in her bedroom in Kiryat Arba on Thursday was a US citizen, the US State Department said.

The girl, Hallel Yaffa Ariel, was attacked after a Palestinian terrorist climbed a security fence and entered a home in the settlement of Kiryat Arba, near Hebron.

“We have now confirmed that she is a US citizen,” State Department spokesman John Kirby said at a news briefing.

Earlier today, the State Department condemned “in the strongest terms the outrageous terrorist attack” in the West Bank, calling the stabbing “unconscionable.”

Netanyahu, in a statement, called on Palestinian leaders to condemn the attack and take immediate steps to stop what he described as incitement that Israel has cited as a main factor behind a string of assaults over the last nine months.

“The horrific murder of an innocent girl in her bed sheds light on the bloodlust and lack of humanity displayed by the terrorists we are facing,” he said.

Palestinian President Mahmoud Abbas did not comment on the attack. He has spoken out against violence in the past, though Israeli officials say his apologies have been half-hearted and at times he has made comments amounting to incitement.

Abbas faced criticism earlier this month after he repeated an unsubstantiated claim of a plot by Israeli rabbis to call on Jews to poison Palestinian wells. He later disavowed his comments.