Israel intercepts part of Islamists’ communicatios regarding downed A321

At least some of the intelligence intercepts being used to assess what happened to the jetliner came from Israeli intelligence, according to a U.S. official briefed on the intelligence, and a diplomatic source, CNN reported.

The communications were captured by Israeli intelligence focused on the Sinai, and passed along to the United States and Britain, the sources said, according to CNN.

Israeli officials would not comment on the claims.

Egyptian officials, who are in charge of the main crash investigation, have taken a more cautious line on the bomb theory, with Ayman al-Muqaddam, the head of the investigation, telling reporters Saturday that "all the scenarios" remained on the table.

"We don't know what happened exactly," he said.

Muqaddam said Egypt had not been provided any information or evidence tied to reports suggesting that a bomb took down the flight, and urged the sources of the reports to pass along related evidence to Egyptian investigators.

But if some of the intelligence is Israeli in origin, it could be an impediment to intelligence sharing over the crash.