Iran's media on Friday published footage and images of calm scenes in the areas where air defenses were activated and explosions were reported.
Israel had carried out a strike on Iran hours earlier, a US official told CNN. The Israeli military has not commented and Iran has not identified the source of the attack.
Air defenses intercepted three drones, an Iranian official said. And air defenses caused blasts near an army base in Isfahan province, according to Iranian media.
Iranian media showed residents walking near Isfahan landmarks such as the Naqsh-e Jahan square and along the Zayandeh Rud river, while normal traffic was reported in the city, according to semi-official news outlet ISNA.
Isfahan airport was operating as normal after airports were earlier closed around the country, according to semi-official Tasnim news.
In the northwest city of Tabriz — where air defenses were also activated —video showed normal traffic and pedestrians in parks and on the streets.