TALLAHASSEE, Fla. (CBSNewYork/AP) — The armed officer on duty at the Florida school where a shooter killed 17 people never went inside to engage the gunman and has been placed under investigation, officials announced Thursday.

The Valentine’s Day shooting at Marjory Stoneman Douglas High School by a gunman armed with an AR-15 style assault rifle has reignited national debate over gun laws and school safety, including proposals by President Donald Trump and others to designate more people — including trained teachers — to carry arms on school grounds. Gun-control advocates, meanwhile, have redoubled their push to ban assault rifles.

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The school resource officer at the high school took up a position viewing the western entrance of the building that was under attack for more than four minutes, but “he never went in,” Broward County Sheriff Scott Israel said at a Thursday news conference. The shooting lasted about six minutes.

The officer, Scot Peterson, was suspended without pay and placed under investigation, then chose to resign, Israel said. When asked what Peterson should have done, Israel said the deputy should have “went in, addressed the killer, killed the killer.” 

The sheriff said he was “devastated, sick to my stomach. There are no words. I mean these families lost their children. We lost coaches. I’ve been to the funerals. I’ve been to the homes where they sit and shiver. I’ve been to the vigils. It’s just, ah, there are no words.”

Israel also placed two other deputies on administrative leave. He said his department had at least 23 encounters with the suspect Nikolas Cruz or his family since 2008. It was during two of these incidents the deputies are being investigated as to whether they could have or should have done more.

Ironically, Peterson was Broward County’s 2014 School Resource Officer of the Year, hailed then for his “reliability in handling issues with tact and judgement,” CBS2’s Dick Brennan reported.

Additionally, there was a communication issue between the person reviewing the school’s security system footage and officers who responded to the school.

Coral Springs Police Chief Tony Pustizzi said during a Thursday news conference that the footage being reviewed was 20 minutes old, so the responding officers were hearing that the shooter was in a certain place while officers already in that location were saying that wasn’t the case.

“There was nothing wrong with their equipment. Their equipment works,” Pustizzi said. “It’s just that when the person was reviewing the tape from 20 minutes earlier, somehow that wasn’t communicated to the officers that it was a 20-minute delay.”

Pustizzi said the confusion didn’t put anyone in danger.

The shooting suspect, 19-year-old Nikolas Cruz, has been jailed on 17 counts of murder and has admitted the attack. He owned a collection of weapons. Defense attorneys, state records and people who knew him indicate that he displayed behavioral troubles for years.

Broward County incident reports show that unidentified callers contacted authorities with concerns about Cruz in February 2016 and November 2017. The first caller said they had third-hand information that Cruz planned to shoot up the school. The information was forwarded to the Stoneman Douglas resource officer. The second caller said Cruz was collecting guns and knives and believed “he could be a school shooter in the making.”

Also in November 2017, Cruz was involved in a fight with the adult son of a woman he was staying with shortly after his mother died, according to a Palm Beach County Sheriff’s Office report. On Nov. 28, a 22-year-old man at the Lake Worth home told the responding deputy the he tried to calm down Cruz, who had been punching holes in walls and breaking objects, but Cruz hit him in the jaw, and the man hit Cruz back.

The deputy found Cruz a short time later at a nearby park. Cruz told the deputy he had been angry because he misplaced a photo of his recently deceased mother, and he apologized for losing his temper.

The other man told the deputy he didn’t want Cruz arrested. He just wanted Cruz to calm down before coming home.

(© Copyright 2018 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)

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