"Boy, 3kg, $2000."

The online message, complete with photos of a tiny newborn, advertises an underground trade where babies are commodities worth thousands of dollars.

Malaysia is a hub for baby selling, with buyers able to choose their own baby based on gender, race and skin colour.

INTERACTIVE: Babies for sale

Some babies are bought by couples desperate to start a family. Others are sold to traffickers and forced to become sex slaves or beggars.

101 East goes undercover in Malaysia, where babies are up for sale.

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Source: Al Jazeera News