Gold prices edged higher on Wednesday, as investors looked ahead to the outcome of the Federal Reserve's policy meeting, the last under the leadership of Janet Yellen before she hands the chairmanship over to Jerome Powell.

Comex gold futures were up around $7.00, or 0.5%, to $1,342.30 a troy ounce by 3:00AM ET (0800GMT). It fell to a one-week low of $1,332.80 in the last session.