Australian police have made 84 mainly drug-related arrests at a rave in western Sydney.
Dance music festival IQON ran most of Saturday at the Sydney International Dragway at Eastern Creek.
Officers attached to Operation Charthouse arrested 84 partiers for offences including goods in custody, assault police and breach of bail.
But police had sniffer dogs to thank for most of the arrests.
They laid 78 charges for possess prohibited drug, four charges for deem supply and one cannabis caution.
Police on Sunday said inquiries into the drug matters were continuing.
Blacktown Local Area Commander Superintendent Mark Wright said in spite of the numbers arrested and charged, the overall crowd was well behaved.