Well, Ms RoseofTexas, only a guy with a Geiger counter or a scintillator would know for sure.
And I ‘d have a pretty hard time getting a visa to enter Iran with that kind of gear ... even if I wanted to make the trip.
I love your tag
Send in drone with one of these babies
Kromek radiation mapping drones
https://www.kromek.com/nuclear/neutron-radiation-detectors/