I thought he wasn't working with patients anyway.
You're not going to like me saying this but if there's an ongoing criminal investigation into his client work you could be in a lot of trouble contracting him and either saying anything about the investigation or implying you'll contribute or withhold evidence based on his communication with you.
Any correspondence you send him will form part of the investigation regardless of what you do or don't say and you could be charged with offences around hindering or interfering with police investigation. Simply put, you contacting him knowing about this investigation could end up in you having a criminal record. I'm pretty sure he's not worth that.
You're not going to like me saying this but if there's an ongoing criminal investigation into his client work you could be in a lot of trouble contracting him and either saying anything about the investigation or implying you'll contribute or withhold evidence based on his communication with you.
Any correspondence you send him will form part of the investigation regardless of what you do or don't say and you could be charged with offences around hindering or interfering with police investigation. Simply put, you contacting him knowing about this investigation could end up in you having a criminal record. I'm pretty sure he's not worth that.