A Calvert County woman accused of sending poisoned juice to several of her co-workers in August was suffering from a disassociative personality disorder at the time and is not criminally responsible for her actions, a Calvert County judge ruled Tuesday.

Lorraine B. Gray, 37, of Lusby, was found guilty on all 31 counts of assault, attempted poisoning and reckless endangerment against her by Judge Warren J. Krug during a hearing Tuesday in Calvert County Circuit Court.

Gray entered a plea of not guilty in the August incidents during yesterday's hearing, after which the judge ruled she was not criminally responsible at the time she committed the crimes.

She will remain a patient at the state psychiatric hospital in Crownsville, the judge said. Her case and mental health will be reviewed periodically, and she could be released if found competent.

According to the statement of facts agreed to by Gray and the state's attorney's office, Gray was arrested in August and charged with sending 11 packages of fruit drink laced with Drano, a chemical used to unclog drain pipes, to co-workers at the Calvert Diversified Services office, which is the headquarters of the Association for Retarded Citizens of Southern Maryland, and to the Sandy Point group home it runs.

She later told police investigators she was upset with mistreatment of clients at the Association for Retarded Citizens of Southern Maryland, according to court documents.