The park where a 14-year-old girl was allegedly raped by a group of men on Saturday.
The sister of a 14-year-old girl allegedly gang-raped in Doonside has desperately called for calm as racial tensions escalate in Sydney's western suburbs.
Six men attacked the girl as she walked through Bill Colbourne Reserve on Saturday night, pinning her to a footpath and sexually assaulting her one by one for 30 minutes, police said.
Police described the men as aged in their teens to early 20s and of "African" appearance, sparking fears of reprisal attacks between the local African community and the islander community to which the alleged victim belongs.
Bill Colbourne Reserve in Blacktown, where a 14-year-old girl was allegedly attacked on Saturday.
The girl's older sister said friends of her brother were encouraging him "to go out there and fight". She took to Facebook to beg friends and family to stay calm, saying "what we need is peace especially my parents and ... my baby sister".
"Please stop whatever negativity you have to say to my siblings about beating up gang bashing, jumping, dog shots whatevz," she said. "Let my family deal with what needs to be done to help our baby sister get through this."
She said her brother was "doing what he can" to help police and she asked others to assist by gathering names of potential suspects and handing them to police.
"If a fight is what your [sic] looking for then please go away," she said. "Most of yous [sic] know [my brother] is the only brother us girls have, what use is he if hes behind bars?"
Fairfax Media has seen posts by two friends of the alleged victim threatening to kill and stab African residents of Doonside.
Another sister of the girl urged them to "stay calm for me please".
The girl told police she was walking home through the park about 11pm on Saturday when she was approached by one male who touched her inappropriately and sexually assaulted her.
Five other people came over and sexually assaulted her, Superintendent Gary Merryweather said on Monday.
A friend told television networks that he had gone to the park with the girl to buy drugs and had left momentarily when the assault occurred. Other witnesses said they saw the girl drinking with men in the park.
Father Chris Riley, from Youth off the Streets, said racial tensions had been simmering between young people in Blacktown for years.
He intends to send a strike force of youth workers out within the next two weeks to address issues within the African community as well as any racial conflict or gang violence.
"Where there's trouble in communities, we need to move in quickly," he said.
The police would not comment on potential reprisal attacks and said officers investigating the rape are continuing to speak to witnesses, local business owners and nearby residents.
"Given the investigation is still in its infancy, it would be irresponsible for police to discuss elements of the case in a public forum," the spokesman said.