Find a private investigator that specializes in this. When you find out an exact location, have the private investigator call the police in the area. Try to get

Find a private investigator that specializes in this. When you find out an exact location, have the private investigator call the police in the area. Try to get pics of the laptop, and pics (ideally identity) of the person if you can in the meantime. Look for patterns in IP addresses to anticipate next moves.