Japan's Nikkei share average and TOPIX Index posted their largest percentage falls since October 16, 2008, as investors dumped shares on fear over Japan's nuclear crisis.

The Nikkei fell 10.55 percent while the broader TOPIX index fell 9.47 percent. The two also both recorded their third-largest percentage fall on record.

(Reporting by Hideyuki Sano; Editing by Edmund Klamann)