Hassan Diab's handwriting does not match the suspect's, nor does his physical description, fingerprints or palm print.

Despite overwhelming evidence of his innocence, Ottawa professor Hassan Diab is now entering his fourth year in solitary confinement in a maximum-security prison in France without charge or trial. The case has been compared with the infamous Dreyfus affair, a 19th-century miscarriage of justice involving the treason conviction of a French artillery officer.

The suspect has been described as a man aged between 40 and 45, but Diab was 26 years old at the time. Diab, now 64, has always maintained his innocence.

French investigative judges have repeatedly stated that there is "consistent evidence" that Hassan was in Beirut, not Paris, at the time of the attack.

Official documents and many witnesses have confirmed that Diab was studying and writing his university exams in Beirut at the time. The investigation confirmed that his passport was stolen and used by somebody else.

Read the full article on Hassan Diab by Mersiha Gadzo at Al Jazeera