The Federal Trade Commission on June 20 initiated an investigation to identify whether the increase in the price of gasoline and other petroleum fuels was involved in market manipulation. The investigation was requested by Senate Commerce Committee Chairman Jay Rockefeller (D-WV). Senator Rockefeller believed the high prices in early spring did not reflect true market conditions. In a letter sent June 20 to Senator Rockefeller, FTC Chairman, Jon Leibowitz, provided a framework for the investigation that seeks to examine the actions of producers, refiners, transporters, marketers, financial traders, and others that could influence petroleum product prices.