A Tunisian appellate court on Friday sentenced 20 individuals to eight years and three months in prison over their involvement in the 2012 attack on the U.S. Embassy in Tunis, revising an earlier verdict that had imposed two-year suspended sentences.

According to Habib Torkhani, spokesperson for the Tunis Court of Appeals, the criminal chamber ruled in favor of harsher penalties, issuing enforceable prison terms for all 20 defendants.

The case stems from violent protests that erupted in September 2012 around the U.S. Embassy in Tunis, triggered by the release of an anti-Islam film. The unrest escalated into an attack on the embassy compound, resulting in property damage and injuries.

The updated ruling follows a review of the case after the prosecution appealed the original verdict. The decision comes amid continued calls for accountability over acts of political violence and attacks on diplomatic missions.