Photos: Mass stabbing at Lone Star College in Texas

Life Flight personnel rush a victim wounded in a stabbing attack on the Lone Star community college system's Cypress, Texas campus into Memorial Hermann Hospital Tuesday, April 9, 2013, in Houston. More than a dozen people were wounded when a suspect went building-to-building in an apparent stabbing attack at the college campus authorities said. The attack on the Lone Star Community College System's campus in Cypress sent at least 12 people to area hospitals, including four people taken by helicopter, according to Cy-Fair Volunteer Fire Department spokesman Robert Rasa. (AP Photo/Houston Chronicle, Johnny Hanson) ( Texas College Stabbing )

Cassie Foe hugs classmate Christian Wilson after leaving from the Cy-Fair campus of Lone Star Community College in Cypress, Texas, where she witnessed a male getting stabbed on Tuesday, April 9, 2013. (AP Photo/Houston Chronicle, Melissa Phillip) ( Texas College Stabbing )

A wounded person is evacuated by helicopter following a mass stabbing at the Cy-Fair campus of Lone Star College in northwest Houston, as seen in this still image from video courtesy of KPRC-TV April 9, 2013. REUTERS/KPRC-TV ( USA-STABBING/TEXAS )

A person is loaded into an ambulance following a mass stabbing at the Cy-Fair campus of Lone Star College in northwest Houston, as seen in this still image from video courtesy of KPRC-TV April 9, 2013. REUTERS/KPRC-TV ( USA-STABBING/TEXAS )

Law enforcement personnel gather near the scene of a mass stabbing at the Cy-Fair campus of Lone Star College in northwest Houston, as seen in this still image from video courtesy of KPRC-TV April 9, 2013.REUTERS/KPRC-TV ( USA-STABBING/TEXAS )

Life Flight personnel rush a victim wounded in a stabbing attack on the Lone Star community college system's Cypress, Texas campus into Memorial Hermann Hospital Tuesday, April 9, 2013, in Houston. (AP Photo/Houston Chronicle, Johnny Hanson) ( Texas College Stabbing )

Law enforcement personnel gather near the scene of a mass stabbing at the Cy-Fair campus of Lone Star College in northwest Houston, as seen in this still image from video courtesy of KPRC-TV April 9, 2013. REUTERS/KPRC-TV ( USA-STABBING/TEXAS )

A police helicopter circles above the Cy-Fair campus of Lone Star Community College in Cypress, Texas, where officials say about a dozen people have been wounded in a stabbing attack Tuesday, April 9, 2013.(AP Photo/Houston Chronicle, Melissa Phillip) ( Texas College Stabbing )

A police line is set up near the scene of a mass stabbing at the Cy-Fair campus of Lone Star College in northwest Houston, as seen in this still image from video courtesy of KPRC-TV April 9, 2013. REUTERS/KPRC-TV ( USA-STABBING/TEXAS )

A Texas State Trooper stands at an entrance as vehicles leave from the Cy-Fair campus of Lone Star Community College in Cypress, Texas on Tuesday, April 9, 2013. (AP Photo/Houston Chronicle, Melissa Phillip) ( Texas College Stabbing )

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) ( Texas College Stabbing )

Harris County Sheriff officers seal off the campus after at least 14 people were injured in a stabbing incident at the Cy-Fair campus of Lone Star College on April 9, 2013 in Cypress, Texas. (Photo by Scott Halleran/Getty Images) ( 166175074 )

Police tape seals off an area after at least 14 people were injured in a stabbing incident at the Cy-Fair campus of Lone Star College on April 9, 2013 in Cypress, Texas. (Photo by Scott Halleran/Getty Images) ( 166175127 )

A sign says "Campus Closed" as police seal off the area after at least 14 people were injured in a stabbing incident at the Cy-Fair campus of Lone Star College on April 9, 2013 in Cypress, Texas. (Photo by Scott Halleran/Getty Images) ( 166175159 )

Harris County Sheriff officers seal off the campus after at least 14 people were injured in a stabbing incident at the Cy-Fair campus of Lone Star College on April 9, 2013 in Cypress, Texas. (Photo by Scott Halleran/Getty Images) ( 166175169 )

Harris County Sheriff officers seal off the campus after at least 14 people were injured in a stabbing incident at the Cy-Fair campus of Lone Star College on April 9, 2013 in Cypress, Texas. (Photo by Scott Halleran/Getty Images) ( 166175305 )

Harris County Sheriff officers seal off the campus after at least 14 people were injured in a stabbing incident at the Cy-Fair campus of Lone Star College on April 9, 2013 in Cypress, Texas. (Photo by Scott Halleran/Getty Images) ( 166175307 )

Harris County Sheriffs Officers prepare to enter the Health Science Center in the Cy-Fair campus of Lone Star College where at least 14 people were wounded in a stabbing on Tuesday, April 9, 2013, in Cypress, Texas. (AP Photo/Houston Chronicle, Mayra Beltran) ( Texas College Stabbing )

This frame grab provided by KTRK shows the scene above the Cy-Fair campus of Lone Star Community College in Cypress, Texas, where officials say about a dozen people have been wounded in a stabbing attack Tuesday, April 9, 2013. (AP Photo/KTRK) ( Texas College Stabbing )

Lone Star College student Michelle Alvarez, second from right, is examined by her aunt Elena Tokarew, right, after the stabbings at Lone Star College's Cypress-Fairbanks campus Tuesday April 9, 2013, in Cyprus, Texas. Alvarez was one of the injured in the stabbing attack at the campus. (AP Photo/Houston Chronicle, James Nielsen) ( Stabbing )

People wait just off the Lone Star College's Cypress-Fairbanks campus, authorities are reporting least 14 people were hurt in a stabbing at the campus Tuesday, April 9, 2013, in Cypress, Texas. The attack at about 11:20 a.m. on the Lone Star Community College System campus sent at least 12 people to area hospitals, including four people taken by helicopter, according to volunteer fire department spokesman Robert Rasa. (AP Photo/Houston Chronicle, James Nielsen) ( Stabbing )

Students wait to leave Lone Star College's Cy-Fair campus in Cypress, Texas, where a student went on a building-to-building stabbing attack Tuesday, April 9, 2013. (AP Photo/Houston Chronicle, Mayra Beltran) ( Texas College Stabbing )

Harris County Sheriff's Deputies check vehicles leaving Lone Star College's Cypress-Fairbanks campus Tuesday April 9, 2013 in Cypress, Texas. (AP Photo/Houston Chronicle, James Nielsen) ( Texas College Stabbing )

A student waits to leave Lone Star College's Cy-Fair campus in Cypress, Texas, where a student went on a building-to-building stabbing attack Tuesday, April 9, 2013. (AP Photo/Houston Chronicle, Mayra Beltran) MANDATORY CREDIT ( APTOPIX Texas College Stabbing )

Nursing student Jessica Moffett, who rendered aid to injured students, talks on the phone at Lone Star College's Cy-Fair campus in Cypress, Texas, where a student went on a building-to-building stabbing attack Tuesday, April 9, 2013. "I am shocked someone would do this to innocent students," said Moffett. (AP Photo/Houston Chronicle, Mayra Beltran) ( Texas College Stabbing )

People wait just off the Lone Star College's Cypress-Fairbanks campus, authorities are reporting least 14 people were hurt in a stabbing at the campus Tuesday, April 9, 2013, in Cypress, Texas. (AP Photo/Houston Chronicle, James Nielsen) ( Texas College Stabbing )

Students run from the Lone Star College's Cy-Fair campus in Cypress, Texas, where a student went on a building-to-building stabbing attack Tuesday, April 9, 2013. (AP Photo/Houston Chronicle, James Nielsen) MANDATORY CREDIT ( Texas College Stabbing )