A married couple in eastern Germany are being held after the remains of two babies were found at their home.
Police said the man had come forward on New Year's Eve to confess to burying the babies in the cellar of his home in the town of Altenburg in the mid-1990s.
The bodies of two infants were found in rubbish bags sealed in concrete on Sunday. Autopsies are under way.
The discovery will add to concerns sparked by a series of cases involving children allegedly killed or neglected.
The bodies of nine infants were found in buckets and flowerpots in a garden in another part of eastern Germany in August last year.
An unnamed woman, believed to be the mother of the children, is facing manslaughter charges, according to AP news agency.
The names of the married couple being questioned in Altenburg have not been released. They are believed to be in their 40s.