U.S. and Belgian intelligence sources told NBC News Wednesday they are certain Najim Laachraoui died at the airport during the blasts Tuesday.

The Brussels attackers used ammonium nitrate bombs, two sources tell NBC News. The explosives were estimated at 44 pounds each.

The attackers who killed 14 at a California office party Wednesday left behind a remote-controlled explosive device as they raced away.

The explosive waistcoats and belts used the explosive TATP and contained identical batteries and push-button detonators, officials said.

The FBI may be able to recover at least some data from Hillary Clinton’s private email server even though there was an attempt to wipe.

The upstate New York prison under scrutiny after two inmates hack-sawed their way to freedom this month has a history of “staff violence, brutality and abuse.”

Joyce Mitchell, the New York prison worker being questioned in the escape of two murderers, was charmed by one of the inmates, sources told NBC News.

Investigators have found evidence of wrongdoing in GMs’ failure to disclose a defect tied to at least 84 deaths, and are seeking a substantial penalty.