A gunman ambushed and killed a campus police officer and was later reported to have been found dead on Thursday at Virginia Tech University, the site of one of the worst shooting rampages in U.S. history.

Virginia Tech students Maggie Cashion L and Kasey Kraft R pause to remember the Virginia Tech police officer who was killed earlier on campus at Virginia Tech University Blacksburg, Virginia
Virginia Tech students Maggie Cashion (L) and Kasey Kraft (R) pause to remember the Virginia Tech police officer who was killed earlier on campus at Virginia Tech University Blacksburg, Virginia December 8, 2011. Reuters
Virginia Tech student Chris Mundy speaks to fellow students at an impromptu memorial for the Virginia Tech police officer who was killed earlier on campus at Virginia Tech University Blacksburg, Virginia
Virginia Tech student Chris Mundy speaks to fellow students at an impromptu memorial for the Virginia Tech police officer who was killed earlier on campus at Virginia Tech University Blacksburg, Virginia December 8, 2011. Reuters
Law enforcement officers work to load a police vehicle onto a tow truck at the site where a Virginia Tech Police Officer was shot and killed at Virginia Tech University Blacksburg, Virginia
Law enforcement officers work to load a police vehicle onto a tow truck at the site where a Virginia Tech Police Officer was shot and killed at Virginia Tech University Blacksburg, Virginia December 8, 2011. Reuters
Law enforcement officers work to clean the road at the site where a Virginia Tech police officer was shot and killed at Virginia Tech University Blacksburg, Virginia
Law enforcement officers work to clean the road at the site where a Virginia Tech police officer was shot and killed at Virginia Tech University Blacksburg, Virginia December 8, 2011. Reuters
Virginia Tech Shooting 2011
A Virginia Tech student places flowers at a memorial for the Virginia Tech police officer who was killed at Virginia Tech University on Thursday, Dec. 8. REUTERS