[The_Judge]

It doesn't matter if I am a former airline employee or not. I blame who I believe is in the wrong. Because a passenger was told he could leave his bag on the plane for the stopover, does he/she deserve to have an item stolen from him by an employee? And yes, it is an employee. Aircraft parked at gates are secure and cannot be accessed by the general public or non-airline staff. Many times, even airline staff have to show their ID's when accessing the aircraft to a security person who is at the door of the aircraft. We had to do that in HNL when I worked there.

My point is and I can't believe this is so hard to understand, the OP's personal property was stolen from him/her. Because they foolishly left the bag on the plane does NOT mandate that something be stolen from it. What happened here is that someone intentionally went through it and removed property. That is a crime and the OP should be compensated by the airline as it was in their care and instruction was given to leave their property if the desired to do so.

Just a sidenote.......I've seen a couple comments inferring Bangkok to be dangerous or dodgy. In 15 years of traveling to and from and while living there for several years, I can't remember ever having any more of a problem in any other place I've ever lived in the U.S. Less, probably.