A 19-year-old man is in a critical condition at Cork University Hospital after he is understood to have taken a substance while at the Indiependence music festival at Mitchelstown in Co Cork
It is believed that the 19-year-old went into the medical centre at the festival and complained of feeling unwell, RTE reports.
He was treated there before being rushed to Cork University Hospital where his condition has deteriorated.
He is now thought to be a critical condition.
The man isn't from Cork but from a nearby county.
Organisers warned of a "bad batch" of a substance going around the Mitchelstown Festival and for people to look after themselves.
Cork University Hospital has confirmed that a number of people have been admitted with "severe illness" after taking tablets.
They said in a statement: "CUH has received patients with very severe illness from taking Ecstasy at the Indie19 Festival in Mitchelstown.
"We are aware that a text message was issued to attendees concerning 'reports of a bad batch of something on the campsite'. Please circulate & to all attending stay safe."
Organisers did send out a warning on the issue last night warning people not to take illegal substances.
A spokesperson said: "Welfare Message - We have reports of a bad batch of something in the campsite, do not consume any substances that you are unsure about, it has the potential to make you very sick. Please be careful and look after each other."
