Tokyo stocks fell Monday, with the key Nikkei index closing below the 10,000 line for the first time since Dec. 10, as exporters were hit by a stronger yen against the U.S. dollar and euro, and investor sentiment was hurt by jitters over debt woes in Europe.

The 225-issue Nikkei Stock Average fell 105.27 points, or 1.05 percent, from Friday to 9,951.82. The last time the Nikkei ended below the 10,000 threshold was Dec. 10 when it fell to 9,862.82.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange dropped 8.77 points, or 0.98 percent, to 883.01.

Almost all 33 sectors on the TSE fell, led by rubber product, precision machinery and food issues. Only four sectors saw gains -- gas and electric, metal product, securities and real estate issues.

The Tokyo market extended its losses from Friday amid growing fears that fiscal concerns in Europe, if unresolved, will slow down the global economy, brokers said.

"Certainly, there are concerns about financial deterioration in Europe, and the euro's weakness relative to the yen, which is expected to affect export-oriented firms," said Yumi Nishimura, a senior equity market analyst at Daiwa Securities Capital Markets Co.

The dollar was trading in the lower 89 yen range Monday morning in Tokyo, down from the mid-89 yen level logged in local trading late Friday, while the euro was trading in the upper 121 yen level, down from its Friday's quotes at mid-122 yen level.

Nishimura also said, "The recent meeting of Group of Seven industrial powers ended without allaying uncertainty" about Europe's debt problems.

"I wouldn't go as far as saying there was a sense of dismay, but this (posture) was not a plus factor for the market," she said.