Most juveniles who commit murder single-handedly have experienced a deep sense of frustration or felt cornered, with many contemplating or attempting suicide, according to a study released Wednesday by a research arm of the Supreme Court.

The report was complied by the Research & Training Institute for Family Court Probation Officers.

The group, which includes probation officers, court judges, teachers, psychiatrists and clinical psychologists, has been studying the rise in heinous youth crimes with the help of outside experts. It is the first study of its kind supported by the nation's top court.