23 August 2020 :

A prisoner, not identified, has been executed at Khalkhal Prison on August 20. According to Iran Human Rights, on the morning of Wednesday, August 20, a prisoner was executed at Khalkhal Prison. He had been transferred to Khalkhal Prison from another prison the day prior to the execution. His identity has not yet been established. IHR sources said he had apparently been sentenced to qisas (retribution in-kind) for murder. At the time of publication, the execution has not been announced by local media or officials in Iran.

https://iranhr.net/en/articles/4399/