The Miami-Dade police department is investigating a shocking video that shows the moment an officer sucker punched an unruly fan during a University of Miami football game on Saturday night.

The 14-second video was first shared by Barstool UMiami, and appears to show four male police officers pick up a woman in a UM t-shirt.

The woman, identified as 30-year-old Bridget Freitas, misses when she first tries to hit the officer holding her right leg, then lands a slap on his face during her second swing.

The 14-second video was first shared by Barstool UMiami , and appears to show four male police officers pick up a woman in a UM t-shirt, who was identified as Bridget Freitas and can be seen slapping the officer holding her right leg

Almost immediately the officer pulls back his arm and punches Freitas in the face.

Miami police said Freitas was charged with Battery on a Law Enforcement Officer, Disorderly Conduct and Breach of the Peace

The punch seemed to knock her unconscious, and she was carried the rest of the way out of the stadium.

The incident happened during the University of Miami's victory over Virginia Tech at the Hard Rock stadium on Saturday night.

The department posted a statement on its Twitter to address the incident, saying: 'Promoting a safe and secure environment during any special event is our primary concern.

'After responding to a disturbance, the person in the video was being removed form the event by our officers for being disorderly. She was subsequently arrested for Battery on a Law Enforcement Officer and Disorderly Conduct/Breach of the peace.

'Supervisory personnel are aware of the video and are reviewing the incident to ensure compliance with our policies and procedures.'

Almost immediately the officer pulls back his arm and punches Freitas in the face. The punch seemed to knock the woman out, and she was carried the rest of the way out of the stadium

Freitas, who works as a nurse, has been arrested at least once before in 2012 (pictured left), when she was charged with battery. It's not clear what lead to her arrest in that instance

The incident was captured by Eric Arguetta, who said he saw her hit another woman and said she looked like she had 'no control of herself'

The incident was captured by Erica Arguetta, who pulled out his iPhone and started recording when he saw things start to escalate.

He said that before the police officers arrived he saw Freitas attempting to hit another woman, and he said she was 'making a scandal.'

'She looked like she had no control of herself and she was refusing to leave the stadium,' the 27-year-old told ABC 10.

'This is why it took four police officers to get her out.'

Freitas, who works as a nurse, has been arrested at least once before in 2012, when she was charged with battery. It's not clear what lead to her arrest in that instance.