Detectives attached to The Hume Local Area Command uHHare appealing for information following an alleged sexual assault incident in the Wallaroo area, near the NSW/ACT border, earlier this month.

Between 2.30pm and 3.30pm on Wednesday 16 September 2015, it is alleged a 22-year-old man sexually assaulted a 24-year-old woman while stopped in a white Holden Colorado utility on Gooromon Ponds Road.

It will be alleged the man then drove the woman to Wallaroo Road, shortly before the Barton Highway, where he stopped and further assaulted her.

During this time, it’s believed a small black car bearing red ‘P’ plates drove past the Holden slowly.

A short time later, a dark green sedan also drove past the Holden.

The woman attempted to gain the attention of both drivers; however was unable to. The man then drove from the scene.

Officers attached to The Hume Local Area Command were alerted of the incident and commenced investigations.

Following inquiries, a 22-year-old man was arrested in the ACT on 18 September 2015, and extradited to NSW.

He has been charged with one count of aggravated sexual assault and one count of detain person for advantage. He will appear at Goulburn Local Court on Friday 25 September 2015.

Police continue their inquiries into the incident and are appealing for information.

Specifically, they would like to speak to the drivers of the black and dark green car which drove past the Holden, as well as anyone who may have been in the Wallaroo area between 2.30pm and 3.30pm on Wednesday 16 September.

Anyone with information can contact Crime Stoppers or Yass Police Station on 02 6226 9399.

The man and woman are known to each other.