Gm Crops In Thailand

To what extent have gm foods invaded thailand? I keep hearing that soya beans in particular are almost all gm variety now, and papaya seems to crop up in the context of gm foods. I've even heard that nearly all rice is gm nowadays. All seem to speak with authority.

Can anyone verify just how prevalent gm crops are here now? And which foods are gm, and are there any ways of knowing by just looking at produce?