The Iranian Supreme Court has overturned the murder convictions of six members of a prestigious state militia who killed five people they considered “morally corrupt.”

The reversal, in an infamous five-year-old case from Kerman, in central Iran, has produced anger and controversy, with lawyers calling it corrupt and newspapers giving it prominence.

“The psychological consequences of this case in the city have been great, and a lot of people have lost their confidence in the judicial system,” Nemat Ahmadi, a lawyer associated with the case, said in a telephone interview.

Three lower court rulings found all the men guilty of murder. Their cases had been appealed to the Supreme Court, which overturned the guilty verdicts. The latest decision, made public this week, reaffirms that reversal.

“The objection by the relatives of the victims is dismissed, and the ruling of this court is confirmed,” the court said in a one-page verdict.

The ruling may still not be final, however, because a lower court in Kerman can appeal the decision to the full membership of the Supreme Court. More than 50 Supreme Court judges would then take part in the final decision.

According to the Supreme Court’s earlier decision, the killers, who are members of the Basiji Force, volunteer vigilantes favored by the country’s supreme leader, Ayatollah Ali Khamenei, and President Mahmoud Ahmadinejad, considered their victims morally corrupt and, according to Islamic teachings and Iran’s Islamic penal code, their blood could therefore be shed.