(RTTNews) - Producer prices in the U.S. unexpectedly decreased in the month of June, according to a report released by the Labor Department on Friday. The unexpected drop in producer prices came amid a sharp pullback in food prices, which plunged by 5.2 percent in June after spiking by 6.0 percent in May. The Labor Department said prices for final demand services fell by 0.3 percent in June, as a 1.8 percent slump in prices for trade services more than offset higher prices for transportation and warehousing services.