Possibly a 5150 to have him committed involuntarily, but speak to an attorney in your area to determine the best course of action. Good luck.
You should consult an attorney for advice regarding your individual situation since every case is different and not all information is relayed in an online question. The Law Office of Ophelia Bernal-Mora, P.A. is a family & criminal law firm located in Orlando, Florida, we invite you to contact us and welcome your calls at 407-377-6828. Contacting us does not create an attorney-client relationship. Please do not send any confidential information to us until such time as an attorney-client relationship has been established.
Your parents can file a request for Domestic Violence Restraining Orders to require him to stay away a certain distance from them, their home, their cars, and their family members, as a result of his threats of harm. They should at least consult with an experienced Family Law Attorney regarding the matter; if they can't afford an attorney, they should go to their local Superior Court's self-help clinic for assistance in preparing the documentation for Domestic Violence Restraining Orders.
Please note that this answer does not constitute legal advice, and should not be relied on, as each situation is fact specific, and it is not possible to evaluate a legal problem without a comprehensive consultation and review of all the facts and court pleadings filed in the case. This answer does not create an attorney-client relationship.
There are several options available, including a restraining order, possible eviction, or calling the police for assistance. Depending on the age of your parents, and their capacity, they may have to act on their own, or possibly with the assistance of others. If you would like to further discuss your options, please speak to an experienced attorney who can guide you properly. We are available at (59) 439-9999.
The answer is based upon the limited information provided and does not create an attorney-client privileged relationship.