First glimpse of Indon trespass review

Customs and Defence chiefs are studying a draft internal report on how Australian border protection vessels came to breach Indonesian territory, but the finished product might never be publicly released.

An internal joint review began in late January, after Australia apologised to Indonesia for "unintentional" incursions into Indonesian territory as part of Operation Sovereign Borders.

Diplomatic ties were already under pressure after claims Australian intelligence officers tapped the mobile phones of Indonesian president Susilo Bambang Yudhoyono, his wife and senior government members.

A spokesman for Defence Minister David Johnston told AAP portions of the incomplete report were on Monday given to Chief of Defence Force David Hurley and Customs chief executive Michael Pezzullo.

He said the pair were considering the content, but declined to comment on whether the information would be publicly released in full or in part.

Agus Barnas, a spokesman for the Indonesian Ministry for Politics, Law and Security, said he was yet to get any information on the review.

"I do think that some information might not be shared for publication," he told AAP.

He hoped it would lead to a "normalisation" of the relationship between the two countries.

"With that, the review would be a win-win solution that would bring the relationship to be back as it was," he said.