ISIS Plans to Mint its Own Currency

Its aim is to stay away from the "tyrant's financial system," ISIS said in a statement. The currency will be in gold, silver and copper. The group claims it will issue another statement to explain the new currency's exchange rate, and where it can be found. The currency will include seven coins: two gold, three silver and two copper.

The move is "purely dedicated to God" and will remove Muslims from the "global economic system that is based on satanic usury," ISIS said.The terror group, which calls itself the Islamic State, has seized large swaths of territory in Iraq and Syria. It seeks to establish an Islamic caliphate in the region.

"Unlike its predecessor al Qaeda, which raised money principally from external sources, ISIS is principally, primarily self-funded," Jimmy Gurule, a former U.S. Treasury undersecretary, told CNN's "The Lead with Jake Tapper" on Thursday.

He said its funding comes from oil, ransom payments, taxes and the sale of stolen artifacts.

"This is the wealthiest terrorist organization that the world has ever known, and so with that kind of money it's hard to understand -- what's the potential? What could they do with that?" Gurule said.

He added: "The difficulty, of course, with that kind of money is you can't just put that money in shoe boxes and place it under your mattress. It has to enter into the financial system at some point in time. So I think the Treasury needs to be focusing on banks -- banks in Qatar for example, and in Kuwait -- that may be the recipients and handling money for ISIS."