The bodies of four babies have been found at a house in Austria, two in a freezer, one in a bucket of concrete and another in a nearby shed.
Police in the city of Graz, in the southeast of the country, said the children had died not long after birth. Officers said the causes of the deaths were unclear.
A 32-year-old woman was arrested on suspicion of killing the babies but according to police, she said she did not know what had happened.
A 38-year-old man, identified as the woman's boyfriend, was also arrested on suspicion of murder.