LAS VEGAS — Authorities are investigating a Tesla Cybertruck explosion on Wednesday outside the Trump Las Vegas hotel in Nevada as a possible act of terror.

The Las Vegas Metropolitan Police Department said it was investigating a fire at the entrance to the tower. The public was told to avoid the area, though the police noted the fire had been put out.

The driver pulled into the valet area of the hotel and the vehicle exploded, according to an official. The driver is apparently dead and, so far, the only casualty from the incident. Seven bystanders had minor injuries, authorities said.

Investigators do not know what caused the blast, such as whether something was wrong with the vehicle or whether something external prompted it. Determining what was behind the explosion is the key focus of the probe.

An official briefed on the probe told ABC News that the Tesla Cybertruck had a load of fireworks-style mortars onboard. Investigators are urgently working to determine a motive and whether the driver intended to set off an explosion and why.

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Until a motive is determined and other possibilities are ruled out, police are treating the explosion like a possible criminal act and a possible act of terror. Evidence collection and investigation are ongoing.

As police continue to investigate whether what took place was a malicious act, the sheriff said he does not believe there is any further threat to the community.

“We believe everything is safe now,” said Sheriff Kevin McMahill.

But he did warn the public to stay away, saying, “We don’t know what we don’t know.”

The property is the subject of frequent threats and heightened security given its connection to President-elect Donald Trump.

Eric Trump, his son and the executive vice president of the Trump Organization, posted on social media about the incident.

“Earlier today, a reported electric vehicle fire occurred in the porte cochère of Trump Las Vegas,” he wrote. “The safety and well-being of our guests and staff remain our top priority. We extend our heartfelt gratitude to the Las Vegas Fire Department and local law enforcement for their swift response and professionalism.”

The hotel also issued a statement on X suggesting the car involved was electric.

“Earlier today a reported electric vehicle fire occurred in the porte cochère of Trump Las Vegas,” the hotel wrote. “The safety & well-being of our guests and staff remain our top priority. We extend our gratitude to the Las Vegas Fire Department and local law enforcement for their swift response.”