Letters by Kyoto 'killer' found.

Mainichi Shimbun

KYOTO -- The suspect in the schoolyard murder of a boy here wrote dozens of letters addressed to several schools that reveal his frustration with the education system, police said.

The sealed letters -- found in the knapsack of Hiromasa Okamura, an unemployed man from Kyoto's Fushimi-ku -- also indicate his involvement in the murder, police said.

Police also admitted that the suspect had caught on to investigators' surveillance efforts, which lead to an ultimately fatal attempt to question him.

One of the letters was addressed to the Kyoto Municipal Hino Elementary School where Toshiki Nakamura, 7, was fatally stabbed in …