The Hi:Fi North festival at the Matfen Hall Estate in Northumberland saw over 50 drug-related arrests as police cracked down.
Around 3,000 people attended the festival on Saturday and police made 53 arrests in and around the site.
A variety of drugs were seized in what Northumbria Police described as a "robust" policy on illegal substances.
A 14-year-old boy was amongst those suffering the effects of drugs and is currently recovering in hospital.








