Former Deputy Scot Peterson, right, is seen on newly released video taken during the Feb. 14 Florida school shooting.

“The video speaks for itself,” the Broward Sheriff’s Office said in a statement. “His actions were enough to warrant an internal affairs investigation, as requested by Sheriff Scott Israel on Feb. 21. After being suspended without pay, Peterson chose to resign and immediately retired rather than face possible termination.”

COP WHO DIDN'T ENTER FLORIDA SCHOOL DURING SHOOTING APPARENTLY LIED ABOUT THINKING GUNSHOTS OUTSIDE

Broward County Sheriff Scott Israel previously said Peterson, who was armed when gunman Nikolas Cruz opened fire at the Parkland high school, “never went in[to]” the building that was under attack. The sheriff added that Peterson instead took up a position viewing the western entrance of the building — as the video released Thursday shows. Peterson remains in the area for the next 20 minutes. Responding officers arrive at the scene, taking a total of 11 minutes to enter the building from the time shots were first reported.

Cruz, who's not seen in the video released Thursday, killed 17 people and injured 17 others that day with Peterson outside the entire time. Israel said Peterson should have charged in and tried to kill the gunman.