Looks like he may have been... I see if I can find it:
Thai intelligence services mention also that the Burmese junta could actually be conducting a new agreement with the UWSA so that the latter keeps the control of areas lying between Moulmein and Mae Sot, thus preventing a resurgence of KNU's ethnic resistance. In exchange, the Wa would obtain the authorization to develop several bus lines in the area, a privilege already granted to Khun Sa at the time of his surrender, as well as to set up some methamphetamine laboratories. This is confirmed by the August attack of the allied UWSA and junta against the KNU.
cjcenter.org
10

anonymous
Pro tip