Melissa Reid and Michaella McCollum, who pleaded guilty to attempting to smuggle £1.5 million worth of cocaine out of Peru, will be sentenced next week at a new hearing.
The pair gave behind-closed-doors pleas, in the port town of Callao. 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 October 1 at a new hearing.
More top news
The family of a wealthy British man has claimed he was murdered by his Ukrainian bride in Kiev so she could inherit his fortune.
Medics and flight crew had been rescuing an injured skier when they crashed in the region of Abruzzo.
A story of two halves