Twenty-seven men and one woman - Australian Angelita Pires - are on trial in Dili charged with conspiring or attempting to assassinate President Jose Ramos Horta and Prime Minister Xanana Gusmao in February 2008.
Prosecutors allege rebel leader Alfredo Reinado - Pires' then lover - led the conspiracy and an early morning attack on Ramos Horta's Dili compound.
Reinado and fellow rebel Leopoldino Exposto were shot dead during the ensuing confrontation. Ramos Horta was seriously wounded.
But the prosecution's case has been undermined by autopsy reports that contradict their claims that Reinado and Exposto were shot during a firefight at a distance of 20 to 30 metres.
Citing "burning and blackening" around the men's wounds, forensic pathologist Muhammad Nurul Islam concluded they were actually shot at close range.
The defence have used the reports to argue the rebels were in fact lured to Dili to be executed.
Now Victorian Institute of Forensic Medicine Director Stephen Cordner, a forensic pathologist of world renown, has thrown his support behind Dr Islam's reports.
"'Burning', sometimes referred to as 'searing' in forensic literature, is effectively a marker of contact or near contact gunshot wounds," Professor Cordner has written in a new report prepared for Pires' Australian lawyers and obtained by AAP.
"By using the word 'burning' and also the phrase 'close range', Dr Islam must be of the view that the shots ... were not inflicted from a distance ... and were inflicted from a range extending from possible contact to a distance of perhaps 10cm".
Professor Cordner says he could not make an independent evaluation of the rebels' wounds because the court has refused to release Dr Islam's autopsy photos.
"It seems to me that Dr Islam has done all that could reasonably be done (taking the photographs to enable independent evaluation of his observations) to discharge his obligations as a forensic pathologist in this case," Professor Cordner writes.
"That independent evaluation by another forensic pathologist cannot be undertaken is clearly not his responsibility."
After hearing from more than 120 witnesses, the Dili trial is due to conclude next week. The panel of three judges will then have 30 days to deliver its verdict.
Ramos Horta has refused to testify at the trial.
Defence lawyers are still waiting for him to respond to a series of written questions submitted more than five months ago.
Image added by ETLJB: Angelita Pires