As a brother, you don't have any right to information about your brother's case. Your brother can call the court where he was arraigned and ask who the attorney assigned to his case is. If your brother has not yet been to court, a public defender may not yet have been assigned to his case. Lawyers appointed by the court are not appointed when you are arrested, they are appointed at your first court appearance. The only way you can help your brother is to stay out of the case, but make sure that he attends all his court dates. His lawyer cannot talk to you without your brother's permission, and anything the lawyer (or your brother) tells you will no longer be protected by attorney client privilege. As long as he is legally competent, you should not get involved in the details as you might hurt his case.
I am a Massachusetts attorney and answer questions based on Massachusetts law. The above answer is for educational purposes only and does not create an attorney client relationship or constitute legal advice.
You can call the criminal clerk of the Court where your brother's case is. You can tell them your brother's name and date of birth and ask them to look up the docket number. Once they do that, you can ask for your brother's attorney's name and number.
Whether that lawyer talks to you or not is another question.
I would tell your brother to either go to the court and ask the clerks office or I would tell him to call the court and ask who the public defender is. He should double check that the court has his correct address so that he gets all the correct correspondence from the court.
Call the clerk's office and ask who the attorney of record is. It is public information.
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