Bali Nine duo Myuran Sukumaran and Andrew Chan have been formally notified to be prepared for the execution in as little as 72 hours.
"We will give the notification today,” Tony Spontana, spokesman for the attorney general’s office, told News Corp. "But it doesn't mean the execution will be within three days. It could be more than three days."
The Philippines’ Department of Foreign Affairs said Saturday that relatives of Mary Jane Fiesta Veloso has received a letter from an Indonesian prosecutor on the impending execution.
Indonesia has a policy of giving foreign death row inmates and embassies of their countries a 72-hour notice before execution.
Among the convicted drug traffickers set to face execution by the firing squad are nationals from Brazil, France, Nigeria and the Philippines besides Australia.
Despite strained relations between the governments of those nations and Indonesia over the case, President Joko Widodo has vowed not to grant mercy to them.
Foreign Minister Julie Bishop said that she fears the worst because Indonesia summoned representatives from Australia and nations of the other convicted to a meeting on Saturday.
Prime minister Tony Abbott said in Gallipoli,Turkey that the government's efforts to save Chan and Sukumaran are ongoing.