I just received to mail to go the court for witness of transaction criminal business
I'm sorry, but I don't understand what you're asking. You got something in the mail ordering you to go to court. Why are you going to court? Are you the defendant or a witness? If you're a defendant, you need to talk to a lawyer right away. You need to sit down with her and go over everything, only then will you get a useful answer.
If you're a witness, you need to go to court. Ideally, whoever sent you the summons should reach out to you to discuss what's going on. If they don't (which is likely, especially if you're a witness for the prosecution), you still need to show up. I can't explain exactly what's going on because I don't know any of the specifics, but it's not really your problem to know. Go where you're supposed to when you're supposed to, answer any questions openly and honestly (that includes saying "I don't know" or "I can't remember" when necessary), and whatever happens isn't on you.
Reread the summons carefully. Have someone else read it as well. Some where on that paper is the name of the person summoning you to court. Either the Commonwealth or the Defense Attorney's name should be clearly evident. Contact that person, by phone, or mail, and ask them why you have been summoned. They should be able to explain to you what the case is about, and what information they want you to testify to. Also verify the date to make sure that it is a time you are available. If you will be hospitalized or out of the country let that person know in advance. If you need an Interpreter make sure that they know to have one present in court that day. Finally, confirm the time and place, right down to what courthouse, what floor, what courtroom. A lot of time gets wasted tracking down missing witnesses.
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