Supporters of convicted Australian drug traffickers on death row in Indonesia attend a candlelight vigil held by Amnesty International in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A woman holds up a banner calling on Indonesia to halt the planned execution of two convicted Australian drug traffickers on death row during a candlelight vigil held by Amnesty International in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A floral tribute spelling out the words “keep hope alive” is staged, during a candlelight vigil held by Amnesty International for a pair of convicted Australian traffickers on death row in Indonesia, in front of the Sydney Harbour Bridge in Australia April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

Australians calling on Indonesia to halt the planned execution of two convicted Australian drug traffickers on death row participate in a candlelight vigil held by Amnesty International in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A woman props up the letter ‘E’ in a lit banner spelling out “Keep Hope Alive” during a candlelight vigil held by Amnesty International for two convicted Australian drug traffickers in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

Australians gather outside the Indonesian consulate as they call for a halt to the planned execution of two convicted Australian drug traffickers, on death row in Indonesia, in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A woman props up the letter ‘E’ in a lit banner spelling out “Keep Hope Alive” during a candlelight vigil held by Amnesty International for two convicted Australian drug traffickers in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A handwritten note with a bouquet lays in front of the Indonesian consulate in Sydney, Australia, April 27, 2015, during a protest calling on Indonesia to halt the planned execution of two convicted Australian drug traffickers on death row. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A woman holds up a banner calling on Indonesia to halt the planned execution of two convicted Australian drug traffickers on death row during a candlelight vigil held by Amnesty International in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A woman props up the letter ‘E’ in a lit banner spelling out “Keep Hope Alive” during a candlelight vigil held by Amnesty International for two convicted Australian drug traffickers in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A woman holds a banner calling for a halt to the planned execution of two convicted Australian drug traffickers on death row in Indonesia, outside the Indonesian consulate in Sydney, Australia, April 27, 2015. Australia made a last-minute plea on Monday for a stay in the imminent execution of two Australian drug traffickers in Indonesia, saying reports that their trial had been tainted by corruption needed to be investigated. (Reuters Photo/Jason Reed)

A message in support of Australian drug convicts and death row prisoners Myuran Sukumaran and Andrew Chan is seen on an entrance signage outside the Indonesian consulate general in Melbourne on April 27, 2015. Australia urged Indonesia April 27 to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. Authorities on April 25 gave formal notice to eight prisoners at the prison — from Australia, Brazil, Nigeria and the Philippines — that they would be executed by firing squad imminently, along with an Indonesian prisoner. (AFP Photo/Theo Karanikos)

Messages in support of Australian drug convicts and death row prisoners Myuran Sukumaran and Andrew Chan are seen on an entrance gate to the Indonesian consulate general in Melbourne on April 27, 2015. Australia urged Indonesia April 27 to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. Authorities on April 25 gave formal notice to eight prisoners at the prison — from Australia, Brazil, Nigeria and the Philippines — that they would be executed by firing squad imminently, along with an Indonesian prisoner. (AFP Photo/Theo Karanikos)

A message for Australian drug convicts and death row prisoners Myuran Sukumaran and Andrew Chan is seen on an entrance gate to the Indonesian consulate general in Melbourne on April 27, 2015. Australia urged Indonesia April 27 to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. Authorities on April 25 gave formal notice to eight prisoners at the prison — from Australia, Brazil, Nigeria and the Philippines — that they would be executed by firing squad imminently, along with an Indonesian prisoner. (AFP Photo/Theo Karanikos)

Messages for Australian drug convicts and death row prisoners Myuran Sukumaran and Andrew Chan are seen on an entrance gate to the Indonesian consulate general in Melbourne on April 27, 2015. Australia urged Indonesia April 27 to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. Authorities on April 25 gave formal notice to eight prisoners at the prison — from Australia, Brazil, Nigeria and the Philippines — that they would be executed by firing squad imminently, along with an Indonesian prisoner. (AFP Photo/Theo Karanikos)

A message for Australian drug convicts and death row prisoners Myuran Sukumaran and Andrew Chan is seen on an entrance gate to the Indonesian consulate general in Melbourne on April 27, 2015. Australia urged Indonesia April 27 to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. Authorities on April 25 gave formal notice to eight prisoners at the prison — from Australia, Brazil, Nigeria and the Philippines — that they would be executed by firing squad imminently, along with an Indonesian prisoner. (AFP Photo/Theo Karanikos)

A woman carries a placard calling mercy for two convicted Australian drug traffickers on death row in Indonesia, in front of the Indonesian consulate in Sydney on April 27, 2015. Australia urged Indonesia to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. (AFP Photo/Saeed Khan)

Demonstrators with placards appeal mercy for two convicted Australian drug traffickers on death row in Indonesia, in front of the Indonesian consulate in Sydney on April 27, 2015. Australia urged Indonesia to ensure the trials of two men sentenced to death on drugs charges were corruption free before their executions go ahead, as family members readied to say their last goodbyes. (AFP Photo/Saeed Khan)