Mumbai, April 14 -- On the heels of report showing a surprise dip by U.S. consumer prices, the Labor Department released a separate report on Friday showing U.S. producer prices also unexpectedly decreased in the month of March.

The Labor Department said its producer price index for final demand fell by 0.4 percent in March after inching up by a revised 0.1 percent in February.

The report also showed the annual rate of producer price growth slowed to 2.7 percent in March from 3.2 percent in February.

The unexpectedly monthly decrease by producer prices partly reflected a continued slump by energy prices, which plunged by 4.0 percent in March after tumbling by 1.3 percent in February.

The report also showed a sharp pullback by food price...