The president's envoy to Chechnya, Nikolai Koshman, has been illegally selling oil from the separatist region, state oil firm Rosneft alleged Tuesday. Rosneft was authorized earlier this year to bring Chechen oil flows under its control, but Koshman has put himself in charge of oil sales from the separatist province, Rosneft spokesman Alexander Stepanenko said Tuesday in a telephone interview. Koshman has blocked Rosneft's efforts to obtain an oil sales license, even as he runs a network of unlicensed traders selling oil on the black market, Stepanenko said. Koshman was not available for comment Tuesday. Segodnya reported Tuesday that Koshman was selling Chechen oil to companies registered in Ingushetia for a mere 2,500 rubles ($88) a ton, though the average market price in the region was 5,000 rubles a ton.