HONG KONG (Reuters) - U.S. stock futures tumbled nearly 3 percent on Tuesday as Japanese markets plunged on reports that the explosions at the stricken Fukushima nuclear power plant were leading to higher levels of radiation near Tokyo.
S&P e-mini futures were down 2.5 percent and slid nearly 3 percent at one point as Tokyo stocks shed 13 percent in a futures-led selloff as investors fretted about the potential impact of the nuclear crisis.
U.S. Treasuries soared. June 10-year T-note futures were up 1-2/32 to 121-8/32 and jumped as high as 121-14.5/32, a three-month high. Ten-year notes were up more than a full point in price to yield 3.236 percent, down 13 basis points on the day.
Reporting by Eric Burroughs; Editing by Ed Lane