I just had something similar happen in New Edinburgh. went and got my level 100 hull upgrade. was talking to the shipyard to get my upgrade and the Chavez hanging around started attacking. finished talking, got my upgrade and then attacked and killed a chavez. there were 3 attacking and when i killed the 1, all 3 disappeared. i decided to warp back to somerled station but when i pressed warp all of sudden i was teleported to 0, 0, 0 and started warping from there.