Gold prices were little changed on Tuesday, as cautious investors focussed on key central bank meetings this week, with the U.S. Federal Reserve likely to accelerate its plans for the roll-back of its pandemic-era economic support measures. Spot gold was last down 0.1% to $1,785.65 per ounce by 0030 GMT. U.S. gold futures also fell 0.1% to $1,786.00.