pk question


hi there, i'm a hardcore player and just would like to know how this person pk'd me so i can avoid it next time.

was doing nm baal runs with my 62 sorc, and went into a tp to the throne of destruction, thinking i was pretty much safe not being near any wp's and such. immediately i was hostiled and hit with frozen blast or some crap to find myself immediately dead. just curious how they pulled this one off if anyone knows?