Dance act Hardwell's show goes ahead in Dublin tonight after more than 100 young people attending the DJ's concert in Belfast last night required urgent medical treatment.

They were reportedly suffering the effects of taking drugs and alcohol.

A major incident was declared by the Northern Ireland Ambulance Service which attended the Odyssey Arena venue and extra staff were called in to help in two of the city's hospitals.

The artist is due to perform at the O2 in Dublin tonight.

However, authorities in Edinburgh, Scotland have cancelled the Dutch DJ's concert tomorrow over safety concerns,

Gardaí say there are no special policing arrangements in place for tonight's O2 concert.

A Garda spokesperson said the gig would be "adequately policed, like any other event".

Gardaí are though advising concertgoers to "turn up sober" or risk not gaining access to the venue.

The O2 issued a statement this evening that the concert is strictly an over 18s event and anybody arriving in an “intoxicated state” would be refused entry.

The statement added: “The venue and promoter are providing 23 non-public duty Gardaí who will patrol the event.

“This number will be augmented by significant further Garda resources working in a public order capacity - all of which would be normal for an event of this type.

“Every precaution is being taken to ensure a safe and enjoyable evening for the 5,500 concert-goers.”