A court spokesman confirmed the UK women's guilty pleas but said they had not yet been sentenced, Sky News reported.
– Callao court spokesman
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.