A chemical compound known as laughing gas; an oxide of nitrogen (N2O).
Police have seized nitrous oxide canisters and ecstasy at Creamfields in Daresbury, Cheshire, ahead of the August bank holiday festival. Officers say more searches will continue as organisers maintain a strict anti-drug policy.
Raheem Sterling has been charged with dangerous driving, possession of nitrous oxide for wrongful inhalation, and failing to provide a specimen after a single-vehicle crash on the M3. The 31-year-old, currently without a club, is due in Basingstoke magistrates court on September 15.