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COLORADO SPRINGS, CO - NOVEMBER 27:  Hostages are escorted to an ambulance during an active shooter situation near a Planned Parenthood facility where an unidentified suspect has reportedly injured up to nine people, including at least four police officers, on November 27, 2015 in Colorado Springs, Colorado. A standoff has developed outside the clinic and the area is on lockdown. (Photo by Justin Edmonds/Getty Images)
COLORADO SPRINGS, CO - NOVEMBER 27:  Hostages are escorted to an ambulance during an active shooter situation near a Planned Parenthood facility where an unidentified suspect has reportedly injured up to nine people, including at least four police officers, on November 27, 2015 in Colorado Springs, Colorado. A standoff has developed outside the clinic and the area is on lockdown. (Photo by Justin Edmonds/Getty Images)

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    Timeline of the Planned Parenthood shooting

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Timeline of the Planned Parenthood shooting

A University of Colorado police officer was killed after a gunman opened fire inside a Planned Parenthood clinic in Colorado Springs, Colorado. CNN's Kyung Lah reports.

Timeline of the Planned Parenthood shooting

A University of Colorado police officer was killed after a gunman opened fire inside a Planned Parenthood clinic in Colorado Springs, Colorado. CNN's Kyung Lah reports.