Brandon Russell of Orlando, Florida, and Sarah Clendaniel from Maryland were arrested last week, US officials said in a briefing on Monday, and they have been charged with conspiring to damage an energy facility.
Russell is a convicted felon and founder of a neo-Nazi group called the Atomwaffen Division that works towards “ushering in the collapse of civilization”, according to the Southern Poverty Law Center, a civil rights organisation that tracks US hate groups.
Russell was previously sentenced to five years in prison after pleading guilty to possession of an unregistered destructive device and the improper storage of explosive materials.
At the time of his arrest, he was still on supervised release, according to the FBI.
The FBI on Monday alleged the plot was racially motivated but did not provide details. About 62 percent of Baltimore city residents are Black, according to US census data.
Representatives for Clendaniel and Russell could not immediately be reached for comment.
“Clendaniel and Russell conspired and took steps to shoot multiple electrical substations in the Baltimore area aiming to ‘completely destroy this whole city’, but these plans were stopped,” Erek Barron, the US Attorney for the District of Maryland, said in the press briefing.
Russell first came under suspicion in 2017 when his former roommate Devon Arthurs was arrested for murder.
During his interview with the FBI, Arthurs said his fellow roommates were plotting to attack US infrastructure, including power lines in Florida.
The information led to Russell’s arrest and subsequent conviction.
Then, starting in at least June 2022, an FBI confidential informant started to receive encrypted messages from a user known as “Homunculus” who encouraged the informant to attack electrical substations, the complaint says.
In those communications over the next few months, Homunculus urged an attack “when there is greatest strain on the grid” and noted that follow-up attacks could further lead to a “cascading failure costing billions of dollars”.
In January, as their communications continued, a third user known as @kali1889 joined the conversation. She said she had compiled a list of potential targets, including Baltimore, noting the location was “literally like a life artery”.
According to the complaint, the account @kali1889 was traced to Clendaniel, who also has an extensive criminal record including a prior conviction for armed robbery.
“Homunculus”, meanwhile, was traced back to Russell, the FBI said.
Baltimore Gas and Electric, a subsidiary of the Exelon Corporation, which owns the targeted substations, said there was no damage to any of its equipment or outages.
The arrests followed the recent vandalisation of electrical substations that left thousands of people without power in other states, including North Carolina, South Carolina and Washington state.
The motives for those attacks were not known.
Thomas Sobocinski, the special agent in charge of the FBI’s Baltimore office, said the agency was not aware of any links between the two people arrested in the alleged Baltimore plot and attacks elsewhere on electrical infrastructure.
In Tacoma, Washington, four electrical substations were vandalised around Christmas, leaving more than 14,000 customers without power. Two men were arrested in connection with those attacks.
Also in December, a utility in North Carolina reported outages from what local authorities said were orchestrated shootings investigated by federal law enforcement. Duke Energy Corp, which provided power to the area, said that a total of 45,000 people had lost power at the time.
The FBI also investigated shots fired near a power facility in South Carolina days later.