LAS VEGAS (AP) — A Colorado dentist accused of setting a fire that damaged a transformer at a solar power array outside Las Vegas last week told investigators he wanted to send a message supporting clean energy and denied his intention was sabotage, police said in an arrest report obtained Wednesday.

“I burned it,” Mohammed Reza Mesmarian told police detectives during questioning following his arrest Jan. 5 at a trailer home parked at a campsite near Lake Mead, the Colorado River reservoir outside Las Vegas.

“Mesmarian admitted he knew setting a vehicle on fire could cause damage to the (transformer) unit, but stated he did it for the big message, larger picture, greater good,” his arrest report said. “He explained the greater good was clean energy.”

Mesmarian, 34, remains jailed without bail pending mental health evaluations and a court hearing Feb. 1. If he is found fit for trial, he could face felony terrorism, arson and other charges that could get him decades in state prison.

He told police the fire early Jan. 4 that damaged Chicago-based Invenergy’s Mega Solar Array “represented moving forward in the world,” the report said.

Mesmarian told police he had been in Las Vegas for several days during the New Year holiday, thought the solar farm about 25 miles (40 kilometers) northeast of Las Vegas was a Tesla facility, and he believed the transformer was connected to “the network.”

The solar array provides electricity by contract with several Las Vegas Strip properties operated by MGM Resorts International. When Invenergy shut it down, the casino company switched to the statewide electric grid. An MGM Resorts official said there was no effect at Strip properties.

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Mesmarian told police he was born in Iran. His attorney, Nick Pitaro, said Wednesday his client is a U.S. citizen and a college graduate. His first name is spelled Mohammad in public records in Colorado. His online professional profile said he attended the University of Colorado Anschutz Medical Campus.

Pitaro declined additional comment about Mesmarian’s case pending the mental competency hearing in state court in Las Vegas.

Mesmarian’s arrest in Nevada followed several attacks and arrests involving electrical substations in states including Washington, Oregon and North Carolina, and an order by federal regulators for a review of security standards at the nation’s electricity transmission network.

The U.S. Department of Homeland Security has also issued a national terrorism advisory bulletin, listing U.S. critical infrastructure among possible targets of violence.

Allegations against Mesmarian bear similarities to a Utah case involving a man arrested in 2016 and later sentenced to federal prison for using a rifle to damage an electric substation, causing a power outage in rural Kane and Garfield counties.

The man, Stephen Plato McRae, spent several months before his arrest targeting power facilities in remote parts of Utah and Nevada as part of what he described as a “master plan” to shut down power in the West, according to court documents.

McRae told an informant that he was “stopping global warming,” and he railed against fossil fuels. The court papers said he was planning another act of sabotage — “the grandmomma” as he described it — to disable a larger power substation in Nevada.

In Mesmarian’s case, Las Vegas police found an iPhone linked to Mesmarian and laptop computers in a burned Toyota Camry registered to his mother, who lives i