An arrest affidavit says the University of Texas student accused of stabbing four students, one fatally, told police he didn't remember attacking anyone.

Kendrex J. White, 21, a 2014 Killeen High School graduates who authorities have said suffered from mental health troubles, was charged with murder in Monday's campus attack.

He remained in jail Thursday in lieu of $1 million bond.

Attorneys listed for him didn't immediately return messages left Thursday.

The affidavit says after White was taken into custody he agreed to talk.

When asked if he knew why he was there, he said, "Yes, accusations of pushing someone down and I think using a bladed weapon."

The affidavit says White told police it was possible he used a knife to hit someone, but didn't remember.

White, a UT junior biology major, was arrested Monday after he was found walking around the plaza in front of Gregory Gym wielding a “large, Bowie-style hunting knife following the attack that left a student dead and three others injured.

The student who was killed was identified as Harrison Brown, a graduate of Graham High School.

He was a freshman and a talented musician who had not yet decided on a major, the university said.

White was an active member of a student group of African American health professionals.

Melody Adindu, the president of the Black Health Professionals Organization, says White was passionate about his work and that she knew him as "very interactive and easygoing."

She says she was shocked by the news of the campus stabbings.

Former Killeen High School classmate Kay'Lynn Wilkerson told the Killeen Daily Herald that she remembers White as "a really smart guy in high school.

He was always nice, had plenty of friends."

Former high school classmate Angela Bonilla, who currently attends UT, told the Herald that "no one expected him to do this.

He was always the sweetest guy, laughing, and having a good time with people."

The violent incident was the third in a little more than three years in Austin in which a Killeen resident was arrested.

Rashad Charjuan Owens, 21, of Killeen, was convicted of capital murder and sentenced to life without parole after he drove a Honda sedan reported stolen in Killeen through a crowd on Red River Street in Austin on March 13, 2014 during the South by Southwest Festival, killing an Austin woman, a man from the Netherlands and injuring 22 other people, several critically.

A critically injured Austin woman, later died in a hospital.

Meechaiel Criner, 18, who was reported as a runaway from Killeen, has been indicted for capital murder in the April, 2, 2016 abduction, sexual assault and strangulation of University of Texas freshman Haruka Weiser, 19, of Portland, Ore.

Her body was found on April 5, 2016, in Waller Creek near the Etter-Harbin Alumni Center.