Industrial output fell a seasonally adjusted 3.4 percent in June from the previous month, downgraded from an initially reported decrease of 3.3 percent, the Ministry of Economy, Trade and Industry said Tuesday.

The index of output at factories and mines stood at 100.0 against the base of 100 for 2010.

METI attributed the downward revision to a decline in production by the transportation equipment industry, which was not reflected in the preliminary report released July 30.

The index of shipments slid 1.9 percent, unchanged from the initial report, while that of inventories rose 2 percent, upgraded from a 1.9 percent increase.