TOKYO, June 3 (Xinhua) -- Sharp-edged pieces of metal about 3 to 30 centimeters
long have been found stuck into road guardrails at about 1,700 points
in 42 prefectures nationwide in Japan, Kyodo News reported Friday.
The Land, Infrastructure and Transport Ministry instructed each regional
bureau Thursday to check for similar cases in other prefectures and report by
So far two cases of injury have been reported. A 12-year-old boy sustained
a scratch on his left leg due to one such object on May 28, while a school
student suffered minor injuries due to a piece of metal, according to Kyodo.
Some prefectural officials suggested the objects could be parts from the
bodies of cars which had rubbed against the guardrails during minor collisions,
The National Police Agency is puzzled about who put the objects in the
guardrails and why they did so across such an extensive area, and has not
obtained any obvious clues.
The police agency is investigating the case as one of assault, saying "the
areas are too extensive to define it as a prank."
Up to date, only Tokyo Municipality and Toyama, Shiga, Nara and Kagoshima prefectures said they have not found such objects. Enditem