Cho Seung-Hui, a 23-year-old South Korean student from the western suburbs of Washington, D.C., has been identified as the gunman in the April 16 shooting rampage at Virginia Tech University in Blacksburg, Va.

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The Virginia Tech Police Department on Tuesday identified the gunman responsible for shooting 32 people on campus before taking his own life the previous day as a student at the university.

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The 23-year old Virginia Tech gunman, Cho Seung-Hui, has been described as a troubled loner. A clinical psychologist and a behavior analyst discuss the profiles of people who commit major crimes.

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Monday's deadly shootings at Virginia Tech University have sparked concern over security at many colleges and universities around the country. Three education officials discuss the challenges of keeping students safe at often sprawling campuses.

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Several of the victims in Monday's mass shooting of 32 Virginia Tech faculty and students came from other countries. The NewsHour reports on the local and international reaction to the tragedy.

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A day after mass shootings left 33 people dead at Virginia Tech University in Blacksburg, Va., the students and faculty were working on dealing with the aftermath, even as more information about the shooter was becoming available.

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Police officials released the name of the Virginia Tech shooter, 23-year old student Cho Seung-Hui, who shot and killed 32 students Monday before killing himself in the worst mass shooting in American history.

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At least 32 people were killed Monday during a shooting rampage in a residence hall and academic building at Virginia Tech University in Blacksburg, Va. Two reporters give the latest on the situation.

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