Published Tuesday, 24 September 2013
Michaella McCollum Connolly, who is 20 and from Dungannon, was arrested last month at an airport in Lima alongside her friend Melissa Reid from Scotland, also 20.
Police found 24lb of cocaine - thought to be worth around £1.5m - hidden inside food packages in their luggage as they attempted to board a flight to Spain.
The pair made their plea behind closed doors before a judge on Tuesday, and it is understood they have taken full responsibility for the drug trafficking.
They face more than six years in jail and could be sentenced next week.
Speaking outside the court in Lima, lawyer Meyer Fishman said he could not comment until the young women were sentenced.
McCollum and Reid had previous claimed they knew the drugs were in their bags - but that a gang forced them at gunpoint to carry the cocaine.
They had the option of pleading guilty in exchange for a lower sentence.
The women, who had been working on Ibiza, were told that if they plead guilty, they could face a minimum of six years and eight months in prison with no eligibility for parole.
A spokesman for the court in Callao said: "They will automatically have a sixth off from the minimum jail sentence of eight years and will be sentenced to six years and eight months in prison.
"Sentencing will take place on 1 October at a new hearing."
© UTV News