According to ABC30 Action News in Fresno, the 17-year old mother went to a hospital last week with postpartum bleeding, but she denied ever giving birth.
Authorities reportedly got permission to search the girl's home, where they found the baby. The teen then admitted that she gave birth that morning, but insisted her baby was dead when she delivered it, ABC30 reports.
According to reports, autopsy results show the baby was alive when she was born and then murdered. The cause of death is not being released at this time.
Bail was set at $1 million.
Get more on this story from our sister station, KFSN-TV.