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.

The Tesla Cybertruck explosion and fire at the entrance of the Trump Hotel in Las Vegas Wednesday morning is being investigated as a possible terrorist act, according to a law enforcement official who has been briefed on the investigation.