Tokyo stocks opened lower Friday as market sentiment was battered by a rise in oil prices, dpa reported.
The Nikkei 225 Stock Average dipped 55.41 points, or 0.42 per cent, to 13,011.8. The index fell to 12,934.87 at one point in morning trading.
The broader Topix index of all first-section issues was also down 7.42 points, or 0.57 per cent, to 1,283.34.
On currency markets at 9 am (0000 GMT), the dollar was quoted at 107.00-02 yen, down from Thursday's 5 pm quote of 107.16-17 yen.
The euro was quoted at 1.5783-88 dollars, up from Thursday's 5 pm quote of 1.5725-27 dollars, and at 168.93-98 yen, up from 168.52-56 yen.