A court spokesman confirmed the UK women's guilty pleas but said they had not yet been sentenced, Sky News reported.
Both women have pleaded guilty to drugs trafficking.
It means they automatically benefit from a sixth off the minimum jail sentence of eight years and will be sentenced to six years and eight months in prison.
Sentencing has not taken place yet and a new hearing where the women will be sentenced has now got to be arranged.
But it's likely that will take place in around a week's time.
More top news
David Cameron has revealed he has "no plans" to meet up with his thirteenth cousin .... Kim Kardashian.
Today there's a mixture of weather around, but it's the wind that has got everyone's attention after a night of howling gales.
We examine the chances of each player in England's under-21 team breaking into Roy Hodgson's plans for Euro 2016