On a March morning, the federal police set out on a large-scale operation: 160 officers search eight properties in Berlin and northern Germany in order to blow up a human trafficking ring.

One of the objects is a massage parlor in which young Vietnamese women are supposed to be forced into prostitution.

The managing director is a German, Manfred R., he is supposed to be a liaison for the Vietnamese masterminds.

This morning, however, there is also another suspicion against the smuggling ring.

R. and his accomplices are said to be involved in a system in which pregnant Vietnamese women are brought together with German men - and the men then recognize the unborn children as their own for money.