GARDAI are bracing themselves for an "unprecedented" security challenge when 250,000 mostly teenage girls descend on Croke Park for three sold-out One Direction gigs next month.
Garda Superintendent Kevin Garlton of Mountjoy garda station said there would be a nightly arrival and departure of 82,300 youngsters.
The massive influx over the nights of three concerts on May 23, 24 and 25 will pose security challenges.
He issued a warning to parents on last night's 'CrimeCall' on RTE One to be mindful that they would not be able to drop their children off in their cars anywhere near the stadium.
He also reminded parents that anyone under the age of 16 must be accompanied by an adult over the age of 18.
Anyone under the age of 14 will not be allowed on the pitch, with or without an adult.