The Ontario Court of Appeal has upheld a judge’s decision that an Ottawa sociology professor should be sent to France as a suspect in a decades-old terror bombing.

In its ruling, the appeal court said both the lower-court judge, and subsequently the federal justice minister, made no legal errors in coming to the conclusion Hassan Diab should be handed to French authorities.

France suspects Diab, 60, was involved in the anti-Semitic bombing of a Paris synagogue in 1980 that killed four people and injured dozens of others.

In June 2011, Ontario Superior Court Justice Robert Maranger committed Diab for extradition to face French authorities despite acknowledging the case against him was weak.

The following April, then-justice minister Rob Nicholson signed an extradition order surrendering Diab to France.

Diab has denied any role in the deadly attack, saying the unwavering moral principle throughout his life has been promoting equality and respect for all.