Kamer Nizamdeen, a Sydney-based Sri Lankan university student has been released on bail four weeks after being charged with plotting to kill former prime minister Malcolm Turnbull.

 Nizamdeen, 25, was arrested in August after a notepad was found allegedly containing detailed Islamist terror plans to kill Mr Turnbull, his former Liberal deputy Julie Bishop and former speaker Bronwyn Bishop.

The University of New South Wales student and IT worker, who is also the nephew of  Sri Lankan cabinet minister Faiszer Mustapha, was also accused of plotting to blow up the Opera House and major Sydney train stations.

However, Director of Public Prosecutions solicitor Soo Choi conceded the evidence contained in the notebook was weak and that no extremist material was found in the document seized from Nizamdeen's inner-city Zetland home.

The prosecution has become aware that an expert handwriting examiner found an inconclusive result on the relevant entries contained in the notebook,' she told Central Local Court in Sydney today, according to the ABC.

Without a conclusive expert opinion suggesting the defendant was the relevant author, evidence for the charge has been significantly weakened.'

Magistrate Robert Williams acknowledged the prosecution had raised doubts about the notepad, found by a fellow UNSW student, and granted Nizamdeen bail as he appeared via video link from the Goulburn Supermax prison. ( Daily Mail).