Cape May prosecutors will not press charges against the Wildwood police officers involved in a violent beach arrest shown in a widely shared online video.

The video shows an officer punching a 20-year-old Philadelphia woman in the head during the altercation.

"A decision such as this is not based on emotion," says County Prosecutor Jeffrey Sutherland. "It is based upon applying the proper laws, policies and directives that govern law enforcement."

The woman, Emily Weinman, was suspected of underage drinking on May 26. Police say she became belligerent after officers asked her to submit to a Breathalyzer test.

She refused to give her name and began walking away. Three officers -- John Hillman, Robert Jordan and Thomas Cannon -- attempted to arrest her. They took her down to the sand, and she spit on them.

Investigators say after reviewing the video, they have determined there's not enough evidence to warrant criminal charges against the officers. All three have been on desk duty.

They say the video shows the woman assaulting the officers first.

Still, her lawyer says police overreacted. An internal affairs investigation is ongoing.

And Weinman has been charged with aggravated assault.