The official IRNA news agency reported early on Friday that a military exercise conducted by the IRGC around the city of Karaj.
This comes amid heightened tensions between Iran and Israel.
Earlier this month, Israeli Prime Minister Benjamin Netanyahu said that Iran was behind an attack on a tanker in the Arabian Sea linked to Israeli billionaire Eyal Ofer.
In January, a drone attack targeted a military site linked to Iran’s defense ministry in Isfahan, which was later blamed on Israel.
Social media users reported hearing gunshots and explosions, while videos circulating on Twitter showed anti-aircraft fire in the skies of Karaj, located west of the capital Tehran.
