If you want to help your friend regarding the criminal charges that he is currently facing, rather than consult with the district attorney's office which is prosecuting the case, I would contact your friend's criminal defense attorney instead to discuss the information that you have.Potentially your information that could be provided may reduce the negative outcome that your friend may receive as the result of the robbery charge. The last thing you want to do is make yourself a target of a police investigation, or worse yet, be charged with a crime.Good luck.Â