I witnessed (heard) an alleged crime a long while back and was recorded as a witness by the police. Recently, I received an email from the defendant's lawyer requesting contact information and asking me to answer some questions.
Do I have to respond? Does the report I gave to the police not qualify as all the information the lawyer would need? Is this just more helpful information for the lawyer?
I understand that I could be subpoenaed as a witness if the case goes to trial, but do I need to respond to lawyers before then?