You need to petition a judge and present evidence that this person is out of control, or out of their mind, but if you are presenting that they are out of their mind, you have to have proof of him not being under the influence of drugs or alcohol or other substances, on occasion a judge will grant the exparte` if you can prove that this person might be a danger to himself or others. If you are very unsure about pursuing this alone then you can consult a lawyer, hope this helps, good luck to you .
