The Dubai government has shut down a foreign exchange trading firm in Dubai pending further investigations. Officials from the Department of Economic Development (DED) closed the offices of Exential Group in Dubai Media City last week and ordered it to cease trading. The DED’s action followed complaints made by Exential’s customers, who claim they have yet to receive returns owed to them for several months. The company allegedly told investors it could more than double their investments from forex trading. On its website, it says it requires a minimum investment of $25,000.