A new mother was left horrified after a man allegedly emerged from the bushes at a beach in Sydney and began "violently masturbating" in front of her, 7News reports.

The publication reports that the man allegedly committed the act of indecency as the new mom and her friend were walking to their car at Wattamolla beach in the Royal National Park, south of Sydney, on Thursday afternoon.

"He was violently masturbating at us," she told 7News. "We yelled at him and tried to take a video to pass along to police, he wasn't fazed at all and continued going at it while staring at us and following us on the track.'"

The incident is currently under police investigation. The suspect has been described as a caucasian about 30-40 years old and was wearing a khaki hat with a black flap, khaki shirt, and khaki boots.

In a Facebook post, Sutherland Shire Police and Command wrote:

"Sutherland Shire Detectives are investigating two separate acts of indecency reports which have occurred at Cronulla and Wattamolla yesterday (Thursday 30/01/2020).

The first incident occurred at Wattamolla Beach about 5.15pm where a male has exposed himself and performed an act of indecency towards a female. He is described as a Caucasian male, about 30-40 years old, wearing a Khaki hat with black flap, khaki shirt and khaki boots.

The second incident occurred at Salmon Haul Reserve (Cronulla) between 7pm and 8pm where a male has exposed himself and performed an act of indecency towards a female and then ran away when she spoke to other people. He is described as a Caucasian male, about 20 years old, tall and skinny, dark short hair, wearing a black t-shirt and blue and white shorts.

Police are appealing for further witnesses or anyone with additional information which may assist investigations to contact Sutherland Shire Police on 9542 0899 or Crime Stoppers on 1800 333 000."

A new mother was left horrified after a man allegedly emerged from the bushes at a beach in Sydney and began "violently masturbating" in front of her, 7News reports.

The publication reports that the man allegedly committed the act of indecency as the new mom and her friend were walking to their car at Wattamolla beach in the Royal National Park, south of Sydney, on Thursday afternoon.

"He was violently masturbating at us," she told 7News. "We yelled at him and tried to take a video to pass along to police, he wasn't fazed at all and continued going at it while staring at us and following us on the track.'"

The incident is currently under police investigation. The suspect has been described as a caucasian about 30-40 years old and was wearing a khaki hat with a black flap, khaki shirt, and khaki boots.

In a Facebook post, Sutherland Shire Police and Command wrote:

"Sutherland Shire Detectives are investigating two separate acts of indecency reports which have occurred at Cronulla and Wattamolla yesterday (Thursday 30/01/2020).

The first incident occurred at Wattamolla Beach about 5.15pm where a male has exposed himself and performed an act of indecency towards a female. He is described as a Caucasian male, about 30-40 years old, wearing a Khaki hat with black flap, khaki shirt and khaki boots.

The second incident occurred at Salmon Haul Reserve (Cronulla) between 7pm and 8pm where a male has exposed himself and performed an act of indecency towards a female and then ran away when she spoke to other people. He is described as a Caucasian male, about 20 years old, tall and skinny, dark short hair, wearing a black t-shirt and blue and white shorts.

Police are appealing for further witnesses or anyone with additional information which may assist investigations to contact Sutherland Shire Police on 9542 0899 or Crime Stoppers on 1800 333 000."