TOKYO, Oct. 23 (Xinhua) -- Tokyo stocks closed sharply lower Tuesday with the benchmark Nikkei stock index slumping to a two-month low as the market mood was hurt by concern about Italy's budget plan and geopolitical issues involving the U.S. and Saudi Arabia and the U.S. and Russia.

The 225-issue Nikkei Stock Average ended down 604.04 points, or 2.67 percent, from Monday to close the day at 22,010.78.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, dropped 44.59 points, or 2.63 percent, to finish at 1,650.72.

All industry categories in the main section retreated into negative territory, with metal product, construction, and glass and ceramics product-linked issues comprising those that declined the most by the close of play.

Advancing issues trounced declining ones by 2,015 to 79 on the First Section, while 14 ended the day unchanged, and on the main section on Tuesday 1,405.28 million shares changed hands, rising from Monday's volume of 1,135.06.

The turnover on the second trading day of the week came to 2,572.4 billion yen (22.89 billion U.S. dollars).