That is disturbing. Were you running an exit node from your home? Or maybe they were watching Tor users and some sort of traffic analysis heuristics they were using gave them a false positive?
I have also dabbled a bit with Tribler which, as it turns out, has built-in functionality similar to that of a tor node. I have a vaguely niggling suspicion that Tribler is a honeypot, but it's providence appears so wholesome, and it's been around a long time.