Iran has executed Ali Fahim for attempting to storm a military site, a day after two others connected to the January incident were also put to death.

Fahim was hanged after the Supreme Court upheld his sentence, The Caspian Post reports, citing Al Jazeera.

Human rights groups, including Amnesty International, condemned the executions as inhumane and said many defendants’ confessions were reportedly obtained under torture.

The unrest in January began over economic hardship and escalated into nationwide protests calling for the government’s overthrow.

Authorities’ response led to one of the deadliest confrontations since Iran’s 1979 revolution, with thousands killed.