CANBERRA, Australia -- Indonesia has given two Australians on death row 72 hours notice of their executions, Australia's foreign minister said Monday.

The Australians Myuran Sukumaran and Andrew Chan are among 10 drug traffickers facing execution by an Indonesian firing squad.

Australian Foreign Minister Julie Bishop told Australian Broadcasting Corp. radio on Monday she is "profoundly dismayed" that over the 72 hours notice. She did not say when the minimum notice period began or when the executions are likely to take place.

News Corp. reported a mortician in Bali has been instructed to inscribe the names and the date, April 29, on the crosses that will mark the pairs' graves.

Bishop says she contacted her Indonesian counterpart Retno Marsudi Sunday night in a bid to prevent the executions.

"I will continue to do everything possible to advocate for a stay of execution and a reconsideration of the clemency bid of the two men," Bishop said.

"I do not believe it is too late for a change of heart," she added.

Australian Prime Minister Tony Abbott had also written to Indonesian President Joko Widodo on their behalf.

"This is not in the best interests of Indonesia, let alone the best interests of the young Australians concerned," Abbott told reporters in France.

As well as the Australian pair, three Nigerian men, four men from Brazil, France, Ghana and Indonesia, and a Filipino woman are to be executed.

The United Nations chief Ban Ki-moon appealed to Indonesia on Sunday to stop the executions.