The petition shall be verified and may be on information and belief. It shall set forth plainly:

(1) The facts which bring the child within the jurisdiction of the court, with a statement that it is in the best interest of the child and the public that the proceeding be brought and, if delinquency or unruly conduct is alleged, that the child is in need of supervision, treatment, or rehabilitation, as the case may be;

(2) The name, age, and residence address, if any, of the child on whose behalf the petition is brought;

(3) The names and residence addresses, if known to petitioner, of the parents, guardian, or custodian of the child and of the child's spouse, if any; or, if neither the child's parents, nor the child's guardian, nor the child's custodian resides or can be found within the state or if their respective places of residence address are unknown, the name of any known adult relative residing within the county or, if there is none, the known adult relative residing nearest to the location of the court; and

(4) If the child is in custody and, if so, the place of his or her detention and the time the child was taken into custody.