Does anybody know…

…exactly why the Myanmar authorities are so sensitive about the importation of radio-controlled toys and gadgets?

I have always assumed that the fear was (or remains) that remote-controlled planes, cars and helicopters, and the like, can be used for surveillance or other nefarious purposes. A 2007 article reports that the government feared they could be (or were being?) used to detonate bombs.

What I am wondering, however, is whether there are any instances on the public record where such toys were used for these purposes? And I appreciate it’s just a relatively minor thing but does anybody know if such restrictions are likely to be rescinded any time soon?