New Delhi, April 29 -- The United States Department of the Treasury has frozen more than $344 million in cryptocurrency tied to Iran as part of a campaign aimed at cutting off Tehran's access to global revenue streams, according to a report by Fox News citing US officials.

The move is reportedly part of "Operation Economic Fury," an expanding economic pressure campaign targeting Iran's oil exports, banking networks and sanctions-evasion systems under the administration's renewed "maximum pressure" strategy.

The news outlet citing a Treasury official said that the department has disrupted billions of dollars in projected Iranian oil revenue in recent days while also freezing hundreds of millions in crypto assets allegedly linked to the I...