Police have arrested 77 people following a western Sydney dance music festival.
The Defqon festival was held at the Sydney International Rowing Centre at Penrith on Saturday, attracting almost 25, 000 people.
Targeting anti-social behaviour, drug and alcohol offences and public safety, officers conducted a number of searches, returning 77 drug detections.
Six people were charged with supplying a prohibited drug while more than 200 received medical treatment for drug and heat-related illnesses with six of those taken to Nepean Hospital for further treatment.
Police also conducted 630 random breath tests, with eight people charged with drink driving and 44 people found to be driving whilst under the influence of drugs.
