After drugs and weapons, child trafficking is the third largest source of income for organised crime outfits in South East Asia.

The United Nations estimates that almost one-and-a-half million people are abducted and sold worldwide every year.

Over half of these are women and young girls.

Much of the trade happens in countries with porous borders where poverty is rife.

John Curtis set up an organisation in 2004 to stem child trafficking in South East Asia.

Called The Grey Man, the organisation is made up of ex-police officers and ordinary Australians.

They work covertly in Thailand and Cambodia removing children from brothels and returning them to their families.

2SER’s Alex McDonald spoke to former Green Beret commando turned Grey Man leader, John Curtis.

www.thegreyman.org