Tokyo  - Tokyo stocks opened lower Friday due to lingering concerns over the US economy.

The Nikkei 225 Stock Average lost 132.74 points, or 0.94 per cent, to 13,997.43.

The broader Topix index of all first-section issues was also down 12.58 points, or 0.91 per cent, at 1,363.02.

On currency markets at 9 am (0000 GMT), the dollar was quoted at 108.00-05 yen, up from Thursday's 5 pm quote of 107.51-53 yen.

The euro was quoted at 1.5496-5501 dollars, down from Thursday's 5 pm quote of 1.5536-38 dollars, and at 167.40-45 yen, up from 167.03-07 yen. (dpa)