(PARKLAND, Fla.) — The Florida sheriff whose department responded to this month’s high school massacre defended his leadership Sunday while insisting that only one of his deputies was on the scene as the gunman killed 14 students and three staff members.

Broward County Sheriff Scott Israel told CNN that investigators are looking into claims that three other deputies were on the scene but failed to enter the school when the chance to save lives still existed. To date, the investigation pointed to only one deputy being on campus while the killer was present, he said.

Israel also labeled as “absolutely untrue” reports that the deputies waited outside even though children were inside the building needing urgent medical treatment.

Israel and the sheriff’s office have come under withering scrutiny after last week’s revelation that deputy Scot Peterson did not go in to confront the suspected shooter, 19-year-old Nikolas Cruz, during the Valentine’s Day attack. It is also facing backlash for apparently mishandling some of the 18 tipster calls related to the suspected shooter. The tips were among a series of what authorities now describe as the clearest missed warning signs that Cruz, who had a history of disturbing behavior, posed a serious threat.

Florida Gov. Rick Scott’s office said Sunday that he asked the Florida Department of Law Enforcement Commissioner Rick Swearingen to investigate the law enforcement response to the shooting. The agency confirmed it would start the investigation immediately.

State Rep. Bill Hager, a Republican lawmaker from Boca Raton, is calling on Scott to remove Israel from office because of...read more at TIME