The three men police are hoping can assist with their inquiries.
Police are hunting for three young men suspected of taking part in a gang rape in a western Sydney park.
One boy, a 16-year-old from Blacktown, has already been arrested over the alleged attack on a 14-year-old girl in Doonside in February.
The girl was walking through Bill Colbourne Reserve around 11pm on a Saturday night when she was allegedly raped by a man, who she described to police as being of African appearance and in his early 20s.
She said she was then pinned to a footpath while another five men sexually assaulted her for over 30 minutes.
On Tuesday, police released CCTV images of three men who they believe may be able to assist with their investigation.
The images were captured at Blacktown and Parramatta train stations on the night of the alleged gang rape.
The first male is described as being aged in his late teens or early 20s and of African appearance. In the image from Blacktown station, he appears to be wearing a white-and-black patterned jumper, and a hat or bandana on his head.
The second male is described as being aged in his late teens or early 20s and of African appearance and is captured at Parramatta station wearing a white and blue, long-sleeved shirt.
The third male is described as being aged in his late teens or early 20s and of African appearance.
In the image from Parramatta station, he appears to be wearing a light blue, long-sleeved shirt.
The 16-year-old boy who was charged with sexual assault and aggravated sexual assault handed himself into Blacktown police on February 13.
Fairfax revealed earlier this month that he and his alleged victim knew each other because they attend the same high school and have several mutual friends.
The boy, who moved to Australia from Sudan 10 years ago, was released on conditional bail earlier this month and must reside with his parents in their Blacktown home.
Detective from the Sex Crimes Squad and Blacktown local area command formed Strike Force Tompo and will address the media on Tuesday afternoon.