The suspect walked behind a man a few feet away from her, then grasped the man's shoulder with one hand and with the other hand stabbed him in the back, thrusting the knife "all the way in".
Before the chaos, freshman Rachel Prichett was standing in line at the Chi'Lantro food truck to get lunch.
"He was just walking around with a knife, so no one even noticed when he hit that first guy, I guess, because no one was screaming. I've never seen like horror-stricken faces like that in my life, it was just insane, it was hectic".
A student has been killed and three others injured after multiple people were stabbed inside the University of Texas at Austin campus in the US.
Brown, from Graham, Texas, was a 2016 graduate of Graham High School.
All the victims were found in about a one-block area and were men aged 20 or 21, police said.
Another student, Ray Arredondo, says he was walking to his vehicle when a mass of students near the gym started running.More news: Turkey's EU dream is over, for now, top official says
White allegedly stabbed four male students in the span of one block on campus, reports the Dallas News.
Responding to questions about the university's response to Monday's attack, Carter said no sirens were used because they would have indicated that something else was going on, such as a lockdown.
Witnesses say he had a "nonchalant" look on his face.
Arredondo used his phone to take a picture of officers taking White into custody and posted it to Twitter.
Travis County Emergency Medical Services confirmed in a tweet that one person died at the scene near the gym.
It was about 1:49 p.m. when UT police received a call of a stabbing. They say he did not resist when officers ordered him to the ground at gunpoint.
The UT Police Department and the Austin Police Department can not confirm the rumors that members of Greek fraternities were being targeted in the attack. "Get out of here!'" Arredondo said. Two officers were able to take White down and into custody.More news: Quake rattles Alaska, Canada border area: USGS
Instead, Carter described White as acting calmly but randomly. "He was not struggling".
He is an active member of the Black Health Professionals Organization student group on campus, said Melody Adindu, the group's new president.
The student newspaper at the University of Texas, the Daily Texan, reported that the university had canceled classes and events for the rest of Monday as the investigation continued.
Three hours after the attack, a slow trickle of students strolled through the area, weaving in and out of buildings to avoid the web of bright yellow police tape lining the streets in every direction. "Call your parents, to let them know you are safe. That fear is very understandable, especially in light of recent vandalism and threats against students", Fenves said. Investigators have interviewed more than 35 witnesses, some of who said they first saw him in a student activity center in the middle of campus.
White was charged with murder, and more charges are expected, acting Austin Police Chief Brian Manley said. Anderson also shared that White had been missing classes lately.
But White recently missed almost a month of Spanish class, Springer said, and it seemed like something was wrong.
Another student said he was walking to his auto when a mass of students near the gym started running.More news: Wang-Tillerson meet amid tensions in Korean peninsula