Three days following the death of seven-month-old Jillian Engelman, the Fresno County District Attorney's office files formal charges on her mother, Lisa May Brown...

Brown is now facing one count of murder and one count of child abuse, causing death.

Both counts carry a minimum sentence of 25 years to life.

According to the search warrant served to brown on Monday, Brown told officials that she drowned the baby because it was possessed by demons and that the devil told her to do it.

"That's clearly the thinking of someone who is psychotic, schizophrenic or experiencing some kind of psychotic break," said Alliant University Professor of Forensics, Dr. Eric hickey.

The search warrant also states that the mother admitted to regularly self-medicating with marijuana, getting high the night before.

She also stated that she felt like she was on meth, on the day she was arrested, but hadn't been using.

And, that she previously took medication, including Paxil, a drug used to treat depression.

Hickey says it is also possible that she did not want the baby, so she created an alibi to justify the killing in her head, but he says that's rarely ever the case.

Hickey says, "More often than not, women who kill their babies like this usually suffer from some form of mental illness."

Hickey says this case reminds him of Texas mother, Andrea Yates, who, back in 2001, was charged with drowning all five of her children in a bathtub.

Yates suffered from a severe case of recurrent postpartum psychosis and major depressive disorder, which Hickey says could be the case here.

Hickey says, "It's not uncommon for someone to come down with postpartum blues, have very deep depression, have deep psychotic breaks, have hallucinations, hear voices sometimes."

Brown is in custody, on 2-million dollars bail.

The autopsy report for baby Jillian has not been released yet

Stay tuned to KSEE24 for the latest information, as it happens.

Click on the link to see Preston Phillips' report.