On September 22, the Commodity Futures Trading Commission announced that its surveillance and enforcement staff are working with the compliance staff of the New York Mercantile Exchange to monitor that day’s large price movement in the expiring September crude oil futures contract to ensure that market participants are not taking advantage of current financial market conditions for manipulative gain. As part of the investigation, CFTC staff can compel sworn testimony as well as production of crude oil market information, including recent trading activity.

http://www.cftc.gov/newsroom/generalpressreleases/2008/pr5553-08.html