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Convicted murderer Bryan Kohberger has filed multiple complaints from prison about fellow inmates harassing and threatening him, according to documents obtained by PEOPLE. The former criminology Ph.D. student, who received a life sentence without parole for the 2022 murders of four University of Idaho students, asked prison officials last month to relocate him to a less dangerous unit.

Kohberger, 30, wrote in the documents that he has been subject to “minute-by-minute” verbal harassment since he was placed in J Block of the Idaho Maximum Security Institution. The unit houses high-profile and high-risk inmates, including those on death row. In his complaint, Kohberger alleged that inmates have made specific, graphic threats of sexual assault, including one who told him “I’ll b— f— you” and another who said “The only a– we’ll be eating is Kohberger’s.”

The complaint was filed just days after he was moved to J Block. Kohberger first complained on the second day he was in the unit, then filed another grievance less than a week later. Guards told Kohberger they had heard “profane statements” made about him but could not recall specific language.

In the handwritten note, Kohberger requested a transfer to a different unit. “Tier 2 of J Block is an environment that I wish to transfer from if possible,” he wrote. “I request transfer to B Block immediately. I wish to speak with you soon.” Kohberger also wrote that he “has not engaged in or otherwise caused any disruptive or negative behavior” such as “flooding” or “striking.” In prison slang, flooding is the act of clogging toilets or sinks to cause damage to a facility, and striking can mean different things, including refusing to work, fighting or other disciplinary offenses.

Kohberger is still housed in J Block as of this week and it’s unclear if his request will be granted. The Idaho Department of Correction declined to comment publicly.

A Target in Prison

Kohberger’s experience with other inmates in his new prison has long been a concern. During an earlier stint in a county jail, Kohberger’s fellow prisoners regularly ridiculed him and he was even yelled at during a call with his mother. “You suck,” one inmate shouted while Kohberger was on the phone. “F—ing weirdo,” said another. He added that he would attack Kohberger but feared the consequences.

In court filings during his trial, Kohberger was described as being socially awkward, with a “piercing stare” and a lack of social awareness. Observers of prison culture say it’s no surprise Kohberger is having a difficult time in his new surroundings. “High profile offenders almost always have a target on their back,” a prison consultant previously told PEOPLE. “In Kohberger’s case, his demeanor only exacerbates the risk.”

Observers have noted he has lost weight during his nearly two-and-a-half years in custody and that the adjustment to Idaho’s most secure facility has been a challenge. The prison holds some of Idaho’s most notorious inmates, including Chad Daybell, who was sentenced to death last year. For Kohberger, the threats and taunts from other inmates have led to comparisons to other infamous convicts, like Jeffrey Dahmer, who was killed in prison in 1994 after years of being targeted.

Kohberger is expected to remain at the Idaho Maximum Security Institution for the rest of his life under strict supervision. It’s unclear whether he will ultimately be allowed to transfer to a less restrictive environment, but the grievances paint a picture of a man under constant verbal attack. His presence in J Block has also already drawn unwanted attention.

Kohberger’s future in prison is uncertain for now. It’s already clear, however, that his notoriety combined with his awkward mannerisms and the nature of his crimes has made him a marked man inside of one of the state’s most secure prisons.