Peter Madden, the Northern Irish lawyer representing Michaela McCollum, said he is not sure whether his client has been charged.
Speaking outside a detention centre in Lima, he said the two women "don't know what is going to happen" and that charges have not been communicated to him, or his Peruvian counterpart, but he suspects charges have been brought.
Melissa Reid and Michaela McCollum appeared in court in Lima, but it is unclear whether they have been charged, their lawyer said.
Two women accused of smuggling 12kg of cocaine into Peru could face up to three years in custody and a maximum of 25 years in prison.
A British woman accused of drug trafficking in Peru said she and her friend "were not smuggling for money, we were smuggling for our lives."