<p>Report on Virginia Tech Shooting Finds Notification Delays</p>
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By IAN URBINA
Published: December 4, 2009</p>
<p>RICHMOND, Va. During the worst campus shooting spree in American history, Virginia Tech officials locked down some administrative buildings and warned their own families more than an hour and a half before the rest of the campus was alerted, according to revisions made in the states official report on the tragedy. </p>