I'm attempting to help a client recover a stolen computer. It's a Macbook Pro running OSX 10.8
I've managed to get the IP address of the thief (gmail logged in when launching the browser.) This information has been given to the local police department for them to request information from the ISP.
*Please do not do anything that might alert the thief or cause legal issues*
I would like to gather as much information as possible to provide the police (i.e. physical address, name, phone number)
A ping shows that the computer is still online, but a scan for open ports shows none open. The user hasn't launched Chrome, otherwise I could track his browser activity.
What are some ways I can gather more information?