(RTTNews) - Producer prices in the U.S. unexpectedly decreased in the month of September, according to a report released by the Labor Department on Tuesday. The Labor Department said nearly half of the September decline in prices for final demand services can be traced to the index for machinery and vehicle wholesaling, which plummeted by 2.7 percent. On Thursday, the Labor Department is scheduled to release a separate report on consumer price inflation in the month of September.