Explosions and anti-aircraft fire were reported Sunday around Tehran’s Pasteur Square where Supreme Leader's Ali Khamenei's compound is located.
Blasts were also heard near the Espinas Palace Hotel in the north of the city, according to eyewitnesses and local sources.
A viewer told Iran International TV that air defense systems were active in Pasteur, a heavily guarded area housing government institutions.
The semi-official Daneshjoo news agency, linked to the Basij, denied any attack on Baharestan district and said a fire broke out at a warehouse instead.