Florida Gov. Rick Scott has told the state’s law-enforcement department to open an investigation into the handling of the Parkland school shooting that left 17 students and staff dead. Questions have emerged about a 26-minute security tape-delay, several armed officers at the school who didn’t do anything to stop the gunman, and reports that shooter Nikolas Cruz displayed troubling behavior for years before the Valentine’s Day attack. The governor’s office said late Sunday that the investigation would begin immediately and that it would offer “full accountability” for any shortcomings in the response to the shooting. “There must be an independent investigation and that is why I asked the FDLE commissioner to immediately start this process,” the governor said in a written statement.