VIENNA — The head of the U.N. nuclear watchdog agency said Monday that there is a possibility of both radiological and chemical contamination within Iran’s main nuclear enrichment facility in Natanz following Israeli strikes, although radiation levels outside the complex are presently normal.

The radiation poses a significant danger if uranium is inhaled or ingested, International Atomic Energy Agency Director-General Rafael Mariano Grossi said.

The risk can be effectively managed with appropriate protective measures, such as using respiratory protection devices while inside the facilities, Grossi said.

“The level of radioactivity outside the Natanz site has remained unchanged and at normal levels, indicating no external radiological impact to the population or the environment from this event,” he said.

He said the main concern inside the Natanz facility is the chemical toxicity of a gas called uranium hexafluoride, which is the result of fluorine mixed with the uranium during enrichment.

— The Associated Press