A jury has acquitted Scot Peterson, the then-school resource officer who failed to act to protect students during the 2018 mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla.

Peterson, a former Broward County sheriff’s deputy, arrived at the school’s 1200 building with his gun drawn 73 seconds before the gunman reached the third floor but backed away after he heard gunfire. Peterson was charged with seven counts of felony child neglect for four students who were killed and three others who were wounded on the building’s third floor. He also faced three counts of misdemeanor culpable negligence for the adults shot on that floor, as well as a perjury charge for comments he made to investigators in the wake of the shooting.