MOSCOW, Idaho — The 28-year-man charged with the brutal murders of four University of Idaho students as they were sleeping is due in court on Tuesday.

RELATED: A timeline of the killings of 4 University of Idaho students

Bryan Kohberger now faces four counts of first-degree murder. He was arrested on Friday in Pennsylvania, thousands of miles from the crime scene.

His attorney said he’ll waive his extradition hearing because he’s “eager to be exonerated.”

Now, a childhood friend is revealing new details about the 28-year-old graduate student accused in the brutal stabbings.

Kohberger’s childhood friend, Thomas, spoke to ABC News, describing the Idaho murder suspect as “mean” in high school, saying Kohberger was eager to be seen as dominant.

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“He would, like, grapple me and like, put me in headlocks and arm bars and stuff like that,” Thomas said.

Kohberger’s family released a statement, which reads:

“First and foremost we care deeply for the four families who have lost their precious children. There are no words that can adequately express the sadness we feel, and we pray each day for them. We will continue to let the legal process unfold and as a family we will love and support our son and brother. We have fully cooperated with law enforcement agencies in an attempt to seek the truth and promote his presumption of innocence rather than judge unknown facts and make…