Teen in bikini attacks sunbathers at Sydney beach

The violent attack took place at a park near Coogee beach and is being investigated by NSW police.

Shocking footage has emerged of a teenage girl in a black bikini attacking two other young sunbathers at a beach in Sydney's eastern suburbs on Friday afternoon.

The clip shows the teen hovering over three other women who are sitting on an oval near Coogee Beach.

The women appear to be engaging in a heated argument before the teen in the black bikini drags one of the other girls by her hand and viciously attacks her on the grass.

A shocking video has emerged of a brawl at a park near Coogee Beach on Friday afternoon. Photo / Supplied

Off camera, a group of young men can be heard encouraging the duo on as the violence continued.

During the brawl, the teen loses her black bikini top as several people jump in to try and stop the fight.

NSW Police are currently investigating the incident and news.com.au can confirm that so far, no arrests have been made.

"About 2.10pm on Friday, police were called to Coogee Bay Oval, Coogee, following reports a teenage girl had assaulted two other girls," a Police Media spokesperson said.

A shocking video has emerged of a brawl at a park near Coogee Beach on Friday afternoon. Photo / Supplied

A teenage girl in a black bikini could be seen attacking two other young females. Photo / Supplied

NSW Police are investigating the matter but so far no arrests have been made. Photo / Supplied

"The group dispersed before police arrived.

"Officers from Eastern Beaches Police Area Command are conducting inquiries."

The footage, which was handed to The Daily Telegraph, was recorded by a concerned parent who described it as "sickening to watch".

"She can't be let to get away with this thinking she can just attack people and not have any consequence, and the young blokes egging her on should also be tracked down and charged with inciting the violence," the father told the publication.

It's unclear what provoked the attack.