Police believe Zhang gave birth to one or two of the children while the rest were born by surrogate. Some women who were paid surrogates for the couple now say they were unaware that the couple was accumulating a supersize family, raising questions about their intentions.

Police arrested a couple in Southern California for child endangerment after finding 21 children in their home. The police believe the couple was part of a surrogacy scam that involved women from around the country.

Video showed the baby’s nanny shook and hit the child on May 5. He wasn’t taken to a hospital until two days later.