An infant dubbed "Baby Angelita" was found deceased on Aug. 1 and detectives determined that the child's 14-year-old mother had been impregnated by her own father.
Seven women have been connected to the investigation so far.
Nearly 60 different people can be seen in more than 1 million digital images and videos recovered from a home in Philadelphia.
Authorities on Thursday night located a missing 3-month-old baby last seen with a 54-year-old in Castro Valley.
Rao Unnava, who retired in June as dean of the Graduate School of Management, and his wife, Vasundhara, a former business lecturer, were on a retirement trip in Nepal when the flooding hit. Now, they are among the thousands who are still unaccounted for.