Two convicted Australian drug smugglers were moved Tuesday to Indonesia’s Nusakambangan Island, where they are scheduled for execution by firing squad. Andrew Chan, 31, and Myuran Sukumaran, 33, were sentenced to death for their part in a 2005 plot to smuggle in heroin with the group that came to be known as the Bali Nine. Australia’s government has pushed Indonesia for a stay of execution but Indonesian President Joko Widodo denied clemency and has said he refuses to do so for drug traffickers on death row. The pair’s execution date has yet to be announced but Indonesia’s attorney general is required to give them 72 hours notice. Prime Minister Tony Abbott said Australia’s government was “revolted” by the possible execution and said he would continue to plead with Indonesia to issue a stay of execution.