Biofuels pose a moral problem: IMF chief

Biofuels pose a moral problem and the worst of rioting prompted by soaring food costs may be yet to come, Dominique Strauss-Kahn, head of the International Monetary Fund, said on Friday.

"When we make biofuels from agricultural products not used for food, that is fine. But when they are made from food products, this poses a major moral problem," Strauss-Kahn told Europe 1 radio station on Friday.

Asked if he would support a possible moratarium on biofuels, Strauss-Kahn said: "When they use foodstuffs."