Watch the shocking moment a man punches a woman in the face

Video footage of a man punching a woman in the face and then running off has been viewed by millions online.

In the video you see a man and a woman leaving a store together.

The woman is seen saying something to the man, and then out of know where the man punches her in the face.

The woman drops to the floor and almost hits her head against the glass wall. 

The man tried fleeing the scene but a bystander managed to grab him. Minutes later the puncher managed to slip away and run off.

According to LiveLeak the woman met the guy hours before the incident at a festival.

The reason behind the incident is not yet clear.

Watch the video below: