Missouri Revised Statutes Title XL. Additional Executive Departments § 631.150. Further additional detention may be requested--hearing to be held when--treatment plan to be presented

1. Before the expiration of the thirty-day period of detention, treatment, and rehabilitation ordered pursuant to section 631.145, the court may order the respondent to be detained for treatment and rehabilitation for an additional period not to exceed ninety days; provided that:

2. If, within twenty-five days of the court hearing described in section 631.145, the head of the alcohol or drug abuse facility has reasonable cause to believe that the respondent, as the result of alcohol or drug abuse, or both, presents a likelihood of serious harm to himself or herself or others, and believes that further detention and treatment is necessary, he or she shall file, or cause to be filed, with the court a petition for ninety days additional detention, treatment, and rehabilitation. The court shall immediately set a date and time for a hearing on the petition, which shall take place within four judicial days of the date of the filing of the petition. The court shall serve a copy of the petition and the notice of the date and time of the hearing upon the petitioner, the respondent, and their attorneys as promptly as possible, but not later than two judicial days after the filing of the petition. The petitioner shall also file with the court, for the court to serve upon the respondent's attorney not later than two days after the filing of the petition, a list of the proposed witnesses for the petitioner. The petition shall comply with the requirements of section 631.140, and an individualized treatment and rehabilitation plan for the respondent shall be attached thereto.