A Hiroshima school's in-house probe into a 15-year-old student's suicide has found its poor clerical management and career guidance is responsible for the death, it emerged Thursday.

The junior high school student from the town of Fuchu took his life in December after the school refused to issue a recommendation to the high school he wanted to attend based on a record of delinquency that was incorrect.

The report, which was disclosed to Kyodo News, was compiled by school Principal Hiroshi Sakamoto and four others on Feb. 29. In it, the school admitted that its failure to manage data used for career guidance, combined with poor career guidance given by the boy's teacher, led the boy to take his own life.