Parkland deputy charged with 11 counts in connection with high school shooting

A state review found Scot Peterson refused to investigate the source of the shootings; in a previous interview, he said he thought the gunfire was happening outside.
2:33 | 06/05/19

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Transcript for Parkland deputy charged with 11 counts in connection with high school shooting
What they saw, what they did, as tonight, they journey back. And good evening from London. We are here for the president's visit tonight before we head to normandy, France, and we'll get to all of that in just a moment here. But we do begin tonight with the breaking headline involving the deadly massacre in parkland, Florida. We all remember, 17 students and teachers were killed. A former sheriff's deputy, seen on surveillance outside that high school as the rampage was under way inside has now been criminally charged tonight. They say his inaction cost on another surveillance camera, we saw the gunman making his way through that school while that deputy was outside. Tonight here, the results are just in, after a 15-month investigation. And ABC's Victor Oquendo leads us off from Florida. Reporter: As the horror was unfolding inside Marjory Stoneman Douglas high school, students taking cover to escape the gunfire, outside the school's resource officer, Broward sheriff's deputy Scot Peterson, hearing the shots. I think we got shots fired. Possible shots fired. 1200 building. Reporter: Heading toward the building in this golf cart. Then taking position outside for 27 minutes, never entering the building. When it was all over, 17 people were dead, another 17 injured. Tonight, that Florida deputy is under arrest, charged with 11 criminal counts, including seven counts of child neglect. A state review finding Peterson refused to investigate the source of gunshots, retreated while victims were being shot and directed officers away from the building. The Florida department of law enforcement saying, "There can be no excuse for his complete inaction and no question that his inaction cost lives." In an interview on "The today show" last year, Peterson said at the time he thought the shots were coming from outside. I hear two to three loud shots. You know it's gunshots? I thought they were. And I thought they were outside immediately and the first thing I thought was, somebody's shooting at us. Reporter: Tonight, Fred Guttenberg, who lost his daughter Jamie in the shooting, tonight tweeting, "Rot in hell Scot Peterson, you could have saved some of the 17. You could have saved my daughter. You did not, and then you lied about it, and you deserve the misery coming your way." And Victor Oquendo is with us live tonight from Florida. And Victor, we know that deputy had already resigned. Today, he was taken into custody? Reporter: That's right, David. He was taken into custody on a $102,000 bond. If convicted on all charges, he's looking at more than 96 years in prison. One of his attorneys tonight saying he is surprised by these

This transcript has been automatically generated and may not be 100% accurate.

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