A Buddhist preacher in Thailand has announced plans for new guidelines aimed at curbing the flamboyant behaviour of gay and transgender monks.

The "good manners" curriculum - the country's first - is being introduced in the northern province of Chiang Rai.

The senior monk told the BBC he was particularly concerned by effeminate activities among novices such as the wearing of make-up and tight robes.

In recent years, they have been accused of abuses of their exalted position in society that range from amassing dozens of luxury cars, to running fake amulet scams, to violating their vows of celibacy, our correspondent says.

He was especially concerned, he said, by the flamboyant behaviour of gay and transgender monks, who can often be seen wearing revealingly tight robes, carrying pink purses and having effeminately-shaped eyebrows.