Prime Minister John Howard says he's upset for the families of the 88 Australians killed in the 2002 Bali bombings after Muslim cleric Abu Bakar Bashir was cleared of any involvement.
The Indonesian Supreme Court's has ruled that Bashir did not give his blessing to the bombings, overturning his conviction on conspiracy charges in the attack that killed 202 people.
Mr Howard said today although he felt deeply for the victims' parents and loved ones, he was powerless to do anything.
"Of course, it is the court system of another country and we can't change that," Mr Howard told the Nine Network today.
"But it doesn't stop us feeling upset and I know there will be a feeling of anger on the part on the parents and loved ones and I am feeling for them this morning, very much."
Bashir was allegedly involved in organising the attack, and Mr Howard said those who had carried it out have been convicted.
"The people who detonated the bombs, and planted the bombs and who were directly responsible, they've been convicted and many of them are awaiting the death penalty being carrying out," he said.