The prisoner who was executed on early Tuesday morning was identified as A. Kaymasy Salkhory.
From the beginning of the year, the Iranian regime has executed at least 21 prisoners. On New Year’s Day, 14 inmates were executed.
Three prisoners were hanged in public in a city in northwestern Iran on Sunday.
At least 1,200 people have been executed since Rouhani became president, including political prisoners.
The executions are being carried out to create fear and intimidation in society and to prevent any public expression of dissent against the regime.
The United Nations General Assembly last month slammed the violations of human rights by the Iranian regime.
The resolution criticized the Iranian regime’s use of inhuman punishments, including flogging and amputations.
The UN’s 61st resolution also censured the mullahs’ dictatorship ruling Iran for the rise in executions, public executions and execution of juveniles.