In mid-2014, the Iraqi National Intelligence Service obtained information from an ISIL operative which revealed that the organisation had assets worth US$2 billion, making it the richest jihadist group in the world. About three-quarters of this sum is said to be represented by assets seized after the group captured Mosul in June 2014; this includes possibly up to US$429 million looted from Mosul's central bank, along with additional millions and a large quantity of gold bullion stolen from a number of other banks in Mosul. However, doubt was later cast on whether ISIL was able to retrieve anywhere near that sum from the central bank, and even on whether the bank robberies had actually occurred.