The case involves Ofelia Garcia Ortega's 14-year-old daughter and the teen's father, Sergio Galvez Perez, who is suspected of impregnating the girl.
While authorities are working to identify the young children, they estimate them to be between the ages of three and seven.
D4vd is alleged to have possibly been involved in the death of 14-year-old victim Celeste Rivas Hernandez, according to the court filings.
San Bruno police say that human remains were found while investigating the aftermath of a house fire that followed a deadly shooting on Friday.
The singer D4vd is considered a suspect in the death investigation of 15-year-old Celeste Rivas, a source told ABC News.
A private investigator is sharing new details in the case of Celeste Rivas Hernandez, whose body was found in a Tesla belonging to singer D4vd.