A Tullahoma white supremacist who admitted to providing material support to Hezbollah pled guilty Monday to one count of arson and one count of attempting to provide material support to a foreign terrorist organization in partial relation to an arson at the Highlander Center in New Market in March of 2019.

Regan Prater, of Tullahoma, was arrested in April of 2025 and is scheduled to be sentenced in September.

According to the Department of Justice, Prater faces up to 20 years in federal prison, along with related fines, restitution, and a term of supervised release to be served after he is released from custody. As part of his agreement, Prater waived indictment by a Federal Grand Jury and agreed to plead guilty to the aforementioned charges.

Court documents establish that Prater used a so-called “sparkler bomb,” i.e., a napalm-based incendiary device ignited by a common sparkler, to destroy facilities maintained by the Highlander Center, a school for grassroots leaders and social movements in New Market, Tennessee. As part of his guilty plea, Prater admitted that he drove from his home in Tullahoma to the Highlander Center, ignited the sparkler bomb, and destroyed a building, ultimately causing over $1.2 million in damage.

Before he detonated the bomb, Prater spray-painted the symbol of the Iron Guard, a 1930s-era paramilitary arm of the Romanian Nazi Party, in the Highlander Center parking lot. This same symbol was engraved on the rifle used in the terrorist attacks in Christchurch, New Zealand, just two weeks prior to the arson. Prater acknowledged that he committed the arson at the Highland Center due to his white-supremacist ideology and as a response to the Highlander Center’s faith-based educational priorities and its association with the Civil Rights Movement.

Separately, Prater also admitted that, in 2019, he attempted to provide material support to Hizballah, also known as “Hezbollah,” which the United States has recognized as a Foreign Terrorist Organization since 1997. Specifically, Prater obtained a document purporting to contain personally identifiable information of over 35,000 individuals purportedly affiliated with the government of Israel. He then provided that document to an individual he believed to be associated with Hizballah, stating, among other things: “Start the hunt.”

According to the Associate Press, an affidavit filed in federal court in East Tennessee last year said Prater’s posts in several group chats affiliated with white supremacist organizations connected him to the crime. In one private message, a witness who sent screenshots to the FBI asked a person authorities believe was Prater whether he set the fire.

“I’m not admitting anything,” the person using the screen name ‘Rooster’ wrote. But he later went on to describe exactly how the fire was set with “a sparkler bomb and some Napalm.”

A white-power symbol was spray-painted on the pavement near the site of the fire. The affidavit describes it as a “triple cross” and says it was also found on one of the firearms used by a shooter who killed 51 people at mosques in Christchurch, New Zealand, on March 15, 2019, about two weeks before the Highlander fire.

The AP also reported this was not Prater’s first time.

Prater was previously sentenced to five years in federal prison for setting a fire in June 2019 at an adult video and novelty store in East Tennessee. He pleaded guilty and was ordered to pay $106,000 in restitution in that case. At the scene of that fire, investigators found a cellphone they later determined belonged to Prater. The phone included a short video showing a person inside the store lighting an accelerant, according to the affidavit.

The Highlander Institute was founded in 1932 in Grundy County and has provided training and education for political leaders, activists and Civil Rights leaders.

According to the AP, Highlander is known as a place where civil rights figures including Rosa Parks and John Lewis received training. Parks attended a workshop there on integration in 1955, about six months before she famously refused to move to the back of a bus in Montgomery, Alabama. She always credited Highlander with helping her become a more determined activist.

Parks returned to Highlander two years later with the Rev. Martin Luther King Jr. for the school’s 25th anniversary celebration, where King gave a keynote address on achieving freedom and equality through nonviolence.

Highlander moved to New Market in 1971.

The blaze at Highlander broke out in the early morning of March 29, 2019. No one was injured, but decades’ worth of irreplaceable documents were lost. They included artifacts, speeches and other materials from different eras, including from the Civil Rights Movement.