Gary Gravelle of Connecticut was indicted last week for allegedly “threatening to kill, injure and intimidate people and explode property in Connecticut and elsewhere.”

Gravelle, “identified as a member of the white separate organization American Knights of Anarchy, or AKA,” reports the New Haven Register. In his powder-filled letter to Trump, Gravelle allegedly wrote, “I, Gary Gravelle, … as a faithful soldier of the AKA, am coming to KILLDonald Trump.”

According to the Justice Department, Gravelle was charged with 12 counts:

The indictment charges Gravelle with 12 counts of maliciously conveying false information about an explosive, an offense that carries a maximum term of imprisonment of 10 years on each count; three counts related to the sending of hoax Anthrax letters, and offense that carries a maximum term of imprisonment of five years on each count, and one count of making threats against the President, an offense that carries a maximum term of imprisonment of five years.

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Per the indictment, the crimes took place in September 2018, when Gravelle sent out a series of emails and made phone calls threatening to detonate bombs at several New Haven locations, including the Fellowship Place (called “Fellowship House” in the document), the Continuum of Care and the Connecticut Mental Health Center. He made similar threats toward the Abraham A. Ribicoff Federal Building in Hartford, Old Saybrook Center, the First Bristol Federal Credit Union in Bristol, the Federal Detention Center, SeaTac, in Seattle and Burlington International Airport, the court document alleges.

Many individuals were victim to Gravelle’s bluffs, among them probation officers, a district judge and numerous employees at the aforementioned locations, according to the indictment.

During the same time period Gravelle also sent out letters containing a white powder he claimed was anthrax, incidents which the Register previously reported. One of them targeted the Middletown synagogue Congregation Adath Israel.

No injuries were reported in relation to the parcels, and at least two appeared to contain baby powder, the Associated Press reported on September 5.

The indictment details several of these cases: the Islamic Center of New London, located in Groton, received such a letter, which also held a piece of paper with the words “You Die” and “Anthrax is an acute infections disease caused by the spore-forming bacterium Bacillus anthracis, a category A agent.”

Per the court document, Gravelle made a threat to President Trump that resembled the other anthrax scares: in his letter, he included a white powder and the words, “I, Gary Gravelle, … as a faithful soldier of the AKA, am coming to KILLDonald Trump ….”

Authorities initially arrested Gravelle on charges of violating a federal supervised release, according to a release from last September stated. In July 2013, Gravelle was sentenced to 70 months in prison and three years of supervised release for mailing numerous threatening letters, the release said.