Story highlights Two victims were released from hospital

A student was arrested, his motive is under investigation

(CNN) One person was killed and three were injured in a stabbing attack Monday afternoon on the campus of the University of Texas at Austin, officials said.

Two of the students injured have been released from the hospital, university officials said.

Earlier, officials had said only two people were hurt but UT-Austin police said later that three were wounded. Details on their injuries were not available.

The suspect is a UT student and is in custody, campus police said. His possible motive is under investigation.

In a message sent to students, faculty and staff, UT President Gregory L. Fenves urged them to support the victims and their families.

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