"They're all without shirts and they have a stick with a white cloth on it. The soldier feels threatened and opens fire. He declares that they're terrorists. They (the Israeli forces) open fire. Two (hostages) are killed immediately," the official told reporters in a phone briefing.

The third hostage was wounded and retreated into a nearby building where he called for help in Hebrew, the official said.

"Immediately the battalion commander issues a ceasefire order, but again there's another burst of fire towards the third figure and he also dies," the official said. "This was against our rules of engagement," he added.

But remember, not a genocide.