An immigration official says more than 161,000 foreigners have left Japan since the March 11 earthquake and tsunami that triggered an unfolding nuclear crisis .
Taichi Iseki, an immigration official at Japan's major airport, Narita, said Friday the number of foreigners flying out from March 11 to March 22 totaled 161,300 _ an eightfold increase from about 20,000 in the same period last year.
The number of foreigners arriving at Narita from March 11 to 22 plunged 60 percent year-on-year to 33,400.