University of Texas stabbings

Officials investigate after a fatal stabbing attack at the University of Texas campus, Monday, May 1, 2017, in Austin, Texas.

Officials investigate after a fatal stabbing attack at the University of Texas campus, Monday, May 1, 2017, in Austin, Texas.

A man is arrested after a fatal stabbing attack on the University of Texas campus in Austin, Texas, Monday, May 1, 2017.

Law enforcement officers secure the scene after a fatal stabbing attack on the University of Texas campus Monday, May, 1, 2017.

Law enforcement officers secure the scene after a fatal stabbing attack on the University of Texas campus Monday, May, 1, 2017.

Law enforcement officers secure the scene after a fatal stabbing attack on the University of Texas campus Monday, May, 1, 2017.

A person is treated by first responders after a deadly stabbing attack on University of Texas campus in Austin, Texas, Monday, May 1, 2017.

A person is treated by first responders after a deadly stabbing attack on University of Texas campus in Austin, Texas, Monday, May 1, 2017.