The driver of the Tesla Cybertruck that exploded outside the Trump International Hotel in Las Vegas on Wednesday has been identified as Matthew Alan Livelsberger, an active-duty US Army Green Beret, according to a law enforcement source familiar with the investigation.

The explosion outside the Trump International Hotel Las Vegas on New Year's Day is being investigated as a possible act of terrorism, sources said.

The suspicious blast is being investigated as a possible terrorist attack, three senior law enforcement members briefed on the matter told NBC News.