US federal prosecutors and securities regulators say now-defunct Black Elk Energy was among the assets overvalued by the Platinum Partners hedge fund as it defrauded investors by as much as $1 billion since 2012, according to an indictment unsealed on Monday.

Court papers filed in the Eastern District of New York name seven defendants including Platinum founder Mark Nordlicht and former Black Elk chief executive and chief financial officer Jeffrey Shulse.

Nordlicht