Police are appealing for public information as they investigate an aggravated sexual assault of a teenager in Springwood on Saturday night.
On Saturday evening (15 August 2015), a 15-year-old girl attended a party at Bellevue Road, Faulconbridge.
The girl then attended a small gathering of teenagers at a home on Crane Street, Springwood.
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Police have been told at the premises, the girl was sexually assaulted by three teenage boys, believed to be aged about 17 years.
Officers attached to Blue Mountains Local Area Command were notified of the incident and commenced investigations, establishing Strike Force Downe.
As inquiries continue, detectives are appealing for anyone with information, or anyone who was at both parties who can assist with investigations, to come forward and contact Crime Stoppers or Blue Mountains Police on (02) 4751 0299.