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.

Local and federal officials are continuing to investigate the deadly explosion Wednesday morning of a Tesla Cybertruck outside the Trump International Hotel in Las Vegas, including whether it was motivated by terrorism or linked to the killing of 15 people in New Orleans hours earlier.