One person is dead and three others have been taken to a hospital with "potentially serious injuries" after a stabbing attack on the University of Texas campus, emergency services say.
Austin police say one person is in custody following the incident.
Travis County Emergency Medical Services has tweeted that one person is dead at the scene near the campus’ Gregory gym and three others have been transported.
The agency notes there also are reports of additional patients with non-life-threatening injuries.
The University of Texas close to the centre of Austin and the Texas capitol building, and is one of the nation’s largest universities.