When Nikolas Cruz began firing shots inside Marjory Stoneman Douglas High School, Broward Deputy Scot Peterson told cops, “Do not approach the 12 or 1300 building, stay at least 500 feet away,” according to a Miami Herald review of police radio records.

Why it matters: This is a different story than Peterson has previously told, which was that he thought the shots were coming from outside the school. But audio review reveals he was aware shots were being fired from within the buildings.

More details from the Miami Herald:

“The records appear to support Broward Sheriff Scott Israel’s contention that Peterson, a longtime school-resource officer, should have entered Building 12 to engage Cruz and try to prevent deaths."

"They also appear to show that other deputies may have refrained from rushing into the school at Peterson’s direction."

Go deeper: Read the complete timeline of events from the Broward Sheriff's Office.