Dangerous drugs which are mis-sold as MDMA but cause psychosis and keep young users awake for up to three days are being sold at Parklife festival, narcotics experts have warned.

"Fake MDMA" drug N-Ethyl-Pentylone, which is three times as strong as the drug it mimics, has been found at the Manchester music festival.

It was first detected in the US in 2016, and then it spread to Australia in 2017, where users had to be sedated after the effects of the narcotic substance took hold. It has also been linked to deaths and mass casualties at music festivals around the world.

The drug is so dangerous because it can be easily mistaken for MDMA, drug testers from The Loop said.

However, it does not give the same high as MDMA, which leads some to accidentally overdose, and it is three times as strong.

Although users feel a short, semi-euphoric high when they first ingest the drug, this gives way to three days of sleepless nights, paranoia and psychosis.