"With release of these records, Virginia Tech seeks to provide those deeply affected by the horrible events of April 2007 with as much information as is known about Cho's interactions with the mental health system 15-16 months prior to the tragedy."
Just two weeks after the shootings, Virginia Gov. Timothy Kaine signed an executive order that required anyone court-ordered to receive mental health treatment be added to a state database of people prohibited from buying guns.
A year after the shooting, Sen. Jim Webb, D-Va., introduced legislation that would amend the Family Educational Rights and Privacy Act, which determines how much of a student's mental health records can be disclosed by a university. Webb argued that the Virginia Tech massacre may have been prevented had the policy been more clear on when information about a mentally ill student can be shared by a university .
The records released today were discovered to be missing during a Virginia panel's August 2007 investigation -- four-and-a-half months after the massacre.
The notes were recovered last month from the home of Dr. Robert Miller, the former director of the counseling center, who says he inadvertently packed Cho's file into boxes of personal belongings when he left the center in February 2006. Until the July 2009 discovery of the documents, Miller said he had no idea he had the records.
Miller has since been let go from the university.
Cho, born in 1984 in Seoul, South Korea, was a naturalized U.S. citizen and had lived in the Washington, D.C., area since age 8.
In the days and weeks following the massacre, it became clear that Cho had not been a happy child. Even his grandfather told ABCNews.com after the massacre that his grandson Cho had "never hugged."
The documents released today make no reference to any mental health diagnoses prior to Cho's time as a Virginia Tech student. After the shooting it was reported that Cho had been diagnosed and had received treatment as a young adult for an anxiety disorder.
Four months after the shootings, Gov. Kaine released a report that harshly criticized the university for its handling of the incident, primarily in the failure to notify students promptly about the shootings, as well as the failure to notice warning signs that he says may have prevented the incident altogether.
University officials have cited privacy laws as the reason they did not exchange information on Cho's mental health history or contact his parents about problems he was having on campus.
The Virginia Tech massacre occurred over a span of several hours, beginning in the early morning of April 16, when Cho claimed his first victims -- students Emily Hilscher, 19, and Ryan Clark, 22 -- as they sat in Hilscher's fourth-floor dorm room.
Cho is then believed to have returned to his own dorm room, where he collected more ammunition and firearms before preparing a lengthy note in which he wrote, "You caused me to do this."
Meanwhile, campus police were just then receiving a call about an incident in the dorm room.
At approximately 9:01 a.m., Cho went to the Blacksburg Post Office where he mailed photos, a letter and video clips of himself reciting an angry rant to NBC. The multimedia manifesto included 27 video clips with 10 minutes worth of Cho's chilling, personal rantings.