Weekly magazines say rumors have long been spreading in the political community that the prosecution would investigate fundraising activity at the office of influencial politician Ichiro Ozawa.
Japanese prosecutors have arrested two persons for evading a huge amount of postal fees on direct mail by disguising it as mail eligible for discount rates for the disabled.
The prosecution in Osaka, western Japan, apprehended the president of a local advertising agency, Toshiyo Uda, and the company's former executive, Toru Abe, on suspicion of violating the Postal law on Thursday.