SAN FRANCISCO (MarketWatch) -- Crude and gold futures added to losses after Federal Reserve officials Wednesday left key interest rates the same and said strains in financial markets remain a threat. Economic growth is likely to be moderate and only pick up gradually later in the year, they said. Gold for June delivery GCM22, -0.77% dropped the most, and the contract was recently down $14.10, or 0.9%, at $1,630.10 an ounce on the Comex division of the New York Mercantile Exchange. Gold had traded at $1,638.90 an ounce minutes before the announcement. Oil for June delivery CLM22, -0.49% was off 16 cents, or 0.2%, $103.33 a barrel on Nymex. Oil traded at $103.37 before the announcement.