The Islamic Revolution Guards Corps (IRGC) Saheb al-Zaman Headquarters in Isfahan has said that the sound of explosion heard at dawn on Tuesday was due to a test of the defense system in the area.

According to The Iran Project, 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.