The Financial Times reports that a Wikileaks cable dated June, 2006 indicates the Bank of England has seen "significant moves by Iran to purchase gold", and that buying the gold "was an attempt by Iran to protect its reserves from risk of seizure".
Estimates indicate Iran has obtained over 300 tonnes of Gold. This is near the levels owned by the Bank of England, and is a substantial increase from 168.4 tonnes per IMF data.