Harrison Brown died at the scene near the Austin university campus gym on Monday after being stabbed allegedly by fellow student Kendrex J. White

A student stabbed to death at the University of Texas has been identified - as details emerge about the 21-year-old knifeman who is a biology major with dreams of becoming a doctor.

Harrison Brown died at the scene near the Austin university campus gym on Monday after being stabbed allegedly by fellow student Kendrex J. White.

Brown graduated in 2016 from Graham High School and joined an acappella group at the university this year.

White was tackled to the ground by campus police shortly after he allegedly killed Brown and severely injured three other male students.

There was no immediate word from police about a possible motive

Hours before the deadly rampage, White tweeted: 'Human selfishness lives and breathes.'

Police said they were not aware of any connections to any terror groups when asked if White was working alone following the deadly attack.

The accused knifeman is believed to be Christian and his Twitter profile indicates he was a junior biology and pre-med major at the university.

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Kendrex J. White, 21, was tackled to the ground by campus police at the Austin university on Monday after going on the deadly stabbing rampage. He was a biology major who had dreams of becoming a doctor

Hours before the deadly rampage, White tweeted: 'Human selfishness lives and breathes'

White was recently arrested and charged with a DUI on April 4, KXAN-TV reports. He allegedly got into a car crash after failing to yield to the right of way. White told officers he had taken two 'happy pills', which were listed as Zoloft in his arrest affidavit.

Pictures from the scene show White being handcuffed by police and a hunting knife holster can be clearly seen strapped to his leg.

University police Chief David Carter described the weapon as a 'Bowie-style' hunting knife. He said the stabbings occurred within a one-block area as the attacker 'calmly walked around the plaza.'

Student Rachel Prichett said she was standing in line at a food truck outside the gym when she saw White with a large knife approach the person standing behind her.

'The guy was standing next to me,' Prichett said. 'He grabbed him by the shoulder and shoved the knife in it. I just started running as fast as I could.'

Another student, Ray Arredondo, said he was walking to his car when a mass of students near the gym started running.

'They were just screaming, 'Run! Get out of here!'' Arredondo said.

Lindsey Clark said she saw the suspect get tackled by police as he was running toward the entrance of Jester Hall, a complex of dormitories and classrooms. She described him as wearing a bandanna and gray sweatshirt and said he appeared quiet and subdued as police held him on the ground.

'You could see and hear people running and screaming: 'There he is!'' before he was tackled by officers.

Paramedics treat a man at the University of Texas campus in Austin on Monday after a man went on a deadly stabbing rampage

Law enforcement officers secure the scene after the fatal stabbing attack on the University of Texas campus on Monday

A witness said she was standing in line at a food truck (above) outside the gym when she saw a man with a large knife approach the person standing behind her and stab him

Another student said he was walking to his car when a mass of students near the gym started running. Police secured the area after taking the suspect into custody

University Police Chief David Carter said it would be 'premature' to discuss the suspect's motive and 'what was going through his mind.'

Arredondo later saw what looked like CPR being performed on someone outside the front door of the gym. Another student was sitting on a bench being treated for cuts to the head or neck, he said.

Authorities cordoned off the scene as a large contingent of state and local police, including officers in helicopters, swarmed the area.

The University of Texas is blocks from downtown Austin and the Texas Capitol and is one of the nation's largest universities.

The attack occurred in the central campus, just a short walk from the administration building and the landmark clock tower that was the scene of a mass shooting in 1966.

The attack came only a few days after a 19-year-old man armed with a machete wounded two people at a university coffee shop in Lexington, Kentucky.

In the April 28 attack, the assailant at Transylvania University asked about the political affiliations of people at the shop. He was arrested and charged with assault. The victims' wounds were not life-threatening, authorities said.

Students wait near the scene after the fatal stabbing. One person died at the scene and several others were taken to the hospital with potentially serious wounds