Two Australian drug traffickers and a Filipino woman were on Saturday given official notification by Indonesia that they will be executed, but with no given date, reports and a lawyer said.

They include Australians Myuran Sukumaran and Andrew Chan, ringleaders of the "Bali Nine" heroin trafficking gang, and mother-of-two Mary Jane Veloso.

There was no word on the fate of several other foreign drug convicts due to face the firing squad, including one each from Brazil and France and four from Africa.