A friend of the woman who killed three people Thursday in a mass shooting at a Rite Aid distribution center in Maryland (the scene is pictured above) said that she identified as a transgender male, The Daily Caller and other outlets are reporting.

The shooter, identified by authorities as 26-year-old Snochia Moseley, did not have any prior criminal record, according to the Harford County Sheriff’s Office, and the Glock 9 mm pistol she used in the shooting was registered to her.

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While both the police and court documents identified Moseley, who was employed at the distribution center, as biologically female, Troi Coley, a high school friend of the shooter, revealed that she identified as transgender as early as 2016.

“I just started talking about [being transgender],” Moseley wrote in a Facebook message from December 2016, according to The Baltimore Sun.

“My sister is totally supportive, my brothers already had an idea, my mom [hadn’t] gotten around to admitting it to yet. But she’s heard about it somehow.”

She also claimed on Facebook that her favorite Bible verse was “an eye for an eye, a tooth for a tooth,” according to the New York Post.

She had talked with Coley about starting hormone treatment.

Moseley’s motives for the shooting remain unclear.

She died Thursday in a local hospital of a self-inflicted gunshot wound.

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Coley, who shared Moseley’s Facebook messages with the media, said she was not an especially angry person, but often felt alienated.

“She wasn’t a monster, wasn’t an angry person. I just believe this was emotional distress. If she did this, it was her last straw,” Coley said.

Mike Carre, Moseley’s co-worker at Rite Aid, said Moseley’s desire to pick a fight was evident from the start of the workday on Thursday.

“Normally, she was a nice person, but she came in in a bad mood,” Carre said, adding, “She wanted to pick a fight. And then she started shooting,” according to The Washington Post.

Related: Day Care Horror: Babies and Adults Stabbed at Overnight Provider

Moseley had minor legal trouble in the days leading up to the shooting, noted The Daily Caller; she was reportedly stopped six times in a span of days from the end of August to the beginning of September by police, who issued her tickets for expired registration plates, suspended registration, and failing to update her address with the Motor Vehicle Administration.

Court records show a September 14 request to take her cases to trial. The Baltimore County Office of Budget and Finance also sued Moseley in April over $117.

On Thursday evening a large group of people gathered at an address in Baltimore’s Loch Raven neighborhood known to be associated with Moseley’s family, The Baltimore Sun reported. News coverage of the shooting could be heard on a television, but the people inside declined to comment.

See more on the shooting in the video below.