Vienna ? Iran is close to clinching a deal to clandestinely import 1,350 tons of purified uranium ore from Kazakhstan, according to an intelligence report obtained by The Associated Press. Diplomats said the assessment was heightening international concern about Tehran’s nuclear activities.

Such a deal would be significant because, according to an independent research group, Tehran appears to be running out of the material, which it needs to feed its uranium enrichment program.

The report was drawn up by a member nation of the International Atomic Energy Agency and provided Tuesday to the AP on condition that the country not be identified because of the confidential nature of the information.