(a) At the expiration of the 14-day period of intensive treatment, a person may be confined for further treatment pursuant to the provisions of this article for an additional period, not to exceed 180 days if one of the following exists:

1. (1) The person has attempted, inflicted, or made a serious threat of substantial physical harm upon the person of another after having been taken into custody, and while in custody, for evaluation and treatment, and who, as a result of a mental health disorder, presents a demonstrated danger of inflicting substantial physical harm upon others.
2. (2) The person had attempted, or inflicted physical harm upon the person of another, that act having resulted in the person being taken into custody and who presents, as a result of a mental health disorder, a demonstrated danger of inflicting substantial physical harm upon others.
3. (3) The person had made a serious threat of substantial physical harm upon the person of another within seven days of being taken into custody, that threat having at least in part resulted in the person being taken into custody, and the person presents, as a result of a mental health disorder, a demonstrated danger of inflicting substantial physical harm upon others.