SUBREDDIT: r/AskReddit
TITLE: Someone stole my girlfriend's laptop. I have the thiefs IP. The local police have been entirely useless.
POST: Reddit,

A few months ago my girlfriend's laptop was stolen at a party her roommates threw when she wasn't there.
The dropbox app on her macbook has shown me where it is a few twice, once, at a nearby gas station (I take it when it was being sold). Now, it's been in Seattle, WA for about a month.
The suspected location of the laptop is at IP address 67.170.55.166. I should mention I live in CA.

I've filed a report with the local police (back when it was still probably local) and provided them with the IP address. All they had to do was subpoena the ISP to get the physical address of the IP address, get a warrant, and go investigate. I barely even got an initial callback.

What do I do Reddit? How can the police not even bat an eye at what would be a felony charge of grand theft.
TL;DR: 
My girlfriend's laptop got stolen and I have the IP address of it's location. Local police were not responsive in the slightest. The laptop is a state away. How do we bring this to justice and get that laptop back?