Iran executed three men in the city of Qom on Thursday over their alleged involvement in the killing of two police officers during the January protests. The judiciary said the men were convicted of murder and acting in favor of Israel and the United States. Among those executed was 19 year old Mehdi Ghasemi, a national wrestling champion who had won a bronze medal at an international competition in Russia.

Human rights groups said the men were tortured into giving confessions and were convicted despite a lack of witnesses or physical evidence placing them at the scene. Families reportedly testified that the accused were elsewhere at the time of the killings. Amnesty International said one of the men suffered a fractured hand due to beatings while in detention.

The executions came amid a broader crackdown following the protests, which erupted over the country’s economic crisis. Rights organizations warn that dozens more detainees, including minors, are at risk of execution after what they describe as fast tracked trials that violate due process. According to human rights monitors, executions in Iran have surged over the past year, reaching their highest level in decades.