Gold prices fluctuate ahead of FOMC meeting and banking concerns.

Gold prices are slightly up and silver is slightly down ahead of key central bank meetings this week. The Federal Reserve's Open Market Committee (FOMC) meeting is expected to raise its main U.S. interest rate by 0.25%, while the European Central Bank is also expected to raise its main interest rate by a quarter-point. The safe-haven gold market may have received a slight bid due to U.S. Treasury Secretary Janet Yellen's warning that the U.S. government could be in default on some of its payments by June 1 if the debt limit is not increased. The gold and silver futures bulls have the firm overall near-term technical advantage.