The air defence system of Tehran province was activated in Iran's capital to confront hostile objects early on Saturday, reported Mehr news agency.
In the early hours of Saturday, several explosions were heard in Tehran, the capital of Iran. Reports suggest that some of the loud sounds were caused by the operation of air defence systems.
The situation in the capital is calm and airports in Tehran are operating normally.
An official at the Imam Khomeini International Airport rejected the allegations over the occurrence of a security incident and said that the flights are being carried out based on the schedule.
According to an official in the Public Relations Department of the Air Defence of Tehran Province, the sound heard in Tehran was related to the activation of the Air Defence of the Province in three sites outside of Tehran.