http://mdn.mainichi-msn.co.jp/national/news/20070209p2a00m0na024000c.html
Police investigating the murder and mutilation of 20-year-old junior college student Azumi Muto have lost four articles of evidence including the weapon used to attack the victim, Metropolitan Police Department officials said Friday.
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The evidence had been placed in a paper bag and put in a cardboard box, which was then placed beside the desk of the person in charge of evidence. However, on the morning of Jan. 6, an officer apparently mistook the items for garbage and threw them out at the Yoyogi Police Station garbage collection point. Usually evidence is supposed to be stored in lockers.
Can't hack the fast-paced challenge of life as a salaryman? Staring at parts on an assembly line just too complex to handle? Don't have the leadership skills to man a cash register at Micky D's? There's a place for you in the NPA!
Commenting on why police waited a month before announcing that the evidence had been lost, the official said, "We were looking into the matter in line with the investigation." He added that police were discussing the legal implications of losing the evidence with public prosecutors.
Translation: we wanted to wait until the media attention died down so we wouldn't get crucified in the press.