Tokyo - Japan's key Nikkei 225 Stock Average plummeted nearly 7 per cent, below the 8,000 level, Thursday as investors' concerns mounted over the US economy, particularly the Big Three automakers' financial fate.
The Nikkei 225 Stock Average tumbled 570.18 points, or 6.89 per cent, to close at 7,703.04.
The broader Topix index of all first-section issues also fell 45.15 points, or 5.46 per cent, to 782.28.