FLORIDA — (Scroll Down For Video) — The Broward County school district released surveillance video Thursday from outside Marjory Stoneman Douglas High School during the February 14 massacre that killed 17 people.

The school resource officer who remained outside Building 12 during the shooting was a sheriff’s deputy; he was later suspended without pay but he immediately retired. Sheriff Israel said “[the deputy] was absolutely on campus for this entire event” and that he should have “went in, addressed the killer, killed the killer”.

Unnamed sources told CNN that when Coral Springs police arrived, they saw three Broward deputies behind their vehicles with pistols drawn.

Coral Springs officers were the first to enter the building, about four minutes after Cruz had left the school, Sheriff Israel said. Due to a tape delay in viewing surveillance footage, officers believed that Cruz was still in the building.. As of early March, there were three investigations into the timeline of police actions.

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