“The sound of the explosion heard at midnight was due to seeing a luminous object and the test activity of the defense system,” the Public Relations Department of the Saheb al-Zaman Headquarters said in a statement on Tuesday.
It added that claims saying that the sound was due to a military exercise or enemy aggression are not true.
Social media users said they heard a sound of explosion at around 2 o’clock on Tuesday morning in Isfahan.
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