A Florida college student is behind bars after allegedly watching her newborn drown after unexpectedly giving birth in a toilet, according to police, who said they found photos of "America's most hated mom" Casey Anthony on her phone.

Anne Mae Demegillo, 20, was indicted by a grand jury Monday on charges of first-degree murder, aggravated child abuse, and failure to report the death of a person with the intent to conceal the death or alter the evidence or circumstances surrounding such death, gave birth on a toilet inside her home and allowed the baby to drown while she cleaned up the blood.

Demegillo reportedly claimed she did not know she was pregnant when she delivered the child. 

Immediately after the child was born, Demegillo allegedly hid the baby inside a duffle bag in her closet and "went about her normal daily routine," the Flagler County Sheriff’s Office said in newborn premature babies," "Palm Coast OBGYN" and "foods to decrease fertility," indicating she had secretly been pregnant and unexpectedly delivered the child at home, according to police. 

The messages allegedly revealed the baby was "born alive and crying, but Demegillo had done something to the infant," authorities added.

Upon speaking with Demegillo, she allegedly told officers she was "not sure she was pregnant but began experiencing severe abdominal pain," in the early hours of March 5, and later delivered the child in her bathroom toilet, police said. 

Authorities added that although she allegedly claimed she believed the child was dead, "detectives determined that Demegillo knowingly and purposefully allowed the newborn to drown in the toilet."

Demegillo later turned herself into the Sheriff Perry Hall Inmate Detention Facility, where she is being held without bond. 

In a court appearance last month, Demegillo’s attorney argued the child’s death was an "isolated episode" and that she should not be held in jail because she does not have any prior convictions or violent history, according to FOX 35.

"I don't know how long she will survive," defense attorney Michael Politis said. "It's not necessary to incarcerate her." 

The State Attorney for Florida's 7th Circuit and Demegillo’s attorney did not immediately respond to Fox News Digital’s request for comment.