Australian Foreign Minister Alexander Downer on Monday said the number of Australians killed in the latest Bali bombings may rise.

Two Australians have been confirmed dead in Saturday's bombings on the Indonesian resort.

Downer said an Australian couple went missing in Bali and may have been killed in the blasts.

"We know where they were, they're now missing," he told Australia's Nine Network television.

"There are some bodies which are still impossible to identify and so work is being done, or will be during the course of today on the identification of those bodies," he said.

"If that is confirmed then there will be four Australians who have been killed," he said.

"In addition a woman who wasn't affected by the bombing, the bombing itself, died from a heart attack at the same time, perhaps affected by the shock of the bombing taking place. She wasn't in the vicinity of the bombings," he said.

Meanwhile, Australian Health Minister Tony Abbott said all Australian patients have been evacuated from Bali and being cared for in either Australia or Singapore.

He told the Nine Network some of the Australians injured in the bombings have suffered serious injuries but are coping well under the circumstances.

Source: Xinhua