Sao Paulo, Brazil - An off-duty military police officer fatally shot an armed robber in front of a school Saturday morning in a now-viral video (video below.)

According to UOL, Katia de Silva Sastre, 42, was with her seven-year-old daughter in front of a private school, waiting with other children and mothers for the gate to open.

As they were waiting, they were approached by Elivelton Neve Moreira, 21, who told them that they were being robbed.

That's when the armed officer drew her gun and shot the robber in the chest and leg.

She then disarmed him and held him down until officers arrived on scene.

Neve Moreira did not survive his injuries.

Authorities said that he fired one shot during the gunfight, which didn't hit anybody. After his first shot, his weapon jammed.

“The first shot ricocheted and got lost. On his second attempt at firing, the weapon locked. Thankfully she was faster than he was, because when the thug discovers that it's a cop, he shoots to kill,” the police lieutenant said, according to a Google translation of UOL.

Video of the shooting was posted online and has been viewed over 30 million times.

Gun control proponents have messaged Blue Lives Matter to inform us that this incident does not demonstrate the effectiveness of concealed carry, because the would-be victim was a law enforcement officer. When asked to explain their reasoning, they declined.

You can see the video of the gunfight below. WARNING - Graphic Content: