Iran has previously promised speedy trials and executions for those arrested during the ongoing anti-government protests.
"I can say that I am certain that no hangings were planned," he said.
The announcement comes after reports that the execution of one of the protest movement's leading figures, Efran Soltani, has been stopped.
Soltani was due to be executed on Wednesday, but according to the human rights organization Hengaw, the sentence has not yet been carried out. However, his life is still in danger.
US President Donald Trump has warned of retaliation if Iran begins executing protesters.
