The Australian Federal Police has defended the role of its officers in the botched terrorism probe related to Indian doctor Mohamed Haneef in its unclassified submission to an iquiry, which was made public on Thursday.

The AFP was under pressure to make public some of its submissions to the inquiry since the Australian Security Intelligence Organisation had allowed the public release of an abridged version of its submission in July.

It finally made its unclassified submission public on Thursday.

"This case was no exception. However, the AFP is firmly of the belief that the officers involved in the investigation into Haneef's case acted professionally and they were motivated by the need to protect the Australian public and Australian interests," it said.

The submission outlined AFP's role in the probe and defended the force's actions. "No investigation is ever perfect and multi-jurisdictional and multi-agency investigations are more complex than most," it added.

It further said that country's Federal Police carefully weighed the evidence against Haneef and were satisfied that sufficient evidence existed to arrest and detain Haneef, the Australian Associated Press reported on Thursday.

"The AFP's work in this case was undertaken in a high pressure environment where the information flow was fast, ever-changing and at times, complex," it said.