TOKYO, Sept. 6 (Xinhua) -- Tokyo stocks closed lower Thursday as a powerful earthquake registering the maximum 7 on Japan's seismic scale rocking Hokkaido early this morning sparked concerns of economic damage in the region, on the heels of a strong typhoon ravaging the archipelago recently.

The 225-issue Nikkei Stock Average dropped 92.89 points, or 0.41 percent, from Wednesday to close the day at 22,487.94.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, fell 12.55 points, or 0.74 percent, to finish at 1,692.41.

Insurance, consumer credit and miscellaneous product-linked issues comprised those that declined the most by the close of play.