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This photo provided by Michael Chalfan shows a man in custody after a series of stabbings at the Cy-Fair campus of Lone Star Community College in Cypress, Texas, on Tuesday, April 9, 2013. The attack sent at least 12 people to area hospitals, including four who were taken by helicopter. A fire department spokesman says several others refused treatment at the scene. (AP Photo/Michael Chalfan)

This photo provided by Michael Chalfan shows a man in custody after a series of stabbings at the Cy-Fair campus of Lone Star Community College in Cypress, Texas, on Tuesday, April 9, 2013. The attack sent at least 12 people to area hospitals, including four who were taken by helicopter. A fire department spokesman says several others refused treatment at the scene. (AP Photo/Michael Chalfan)

Lone Star College stabbing

A suspect is in custody after at least 14 people were injured during a mass stabbing at Lone Star College in the northwest area of Houston, Texas, on April 9. A different Lone Star system campus

was the site of a shooting in January; two people were wounded.