Dallas police were called to an apartment in Red Bird around 6:20 a.m. Monday, where officers found the 2-month-old, Justice Hull, dead.
Two teens were home at the time. Police believe one of the teens, a 14-year-old girl, drowned the baby. The second teen was a witness and likely not involved.
The baby's biological mother, Keshondria, is currently in jail for probation violation and had surrendered Justice to Child Protective Services. At Keshondria's request, the agency had placed Justice in the home where she was later found dead.
CPS says it's reviewing the entire process of placing Justice at the family's home.
A statement says, "CPS approved the placement and was monitoring the infant's progress. An internal inquiry by the DFPS Office of Child Safety is under way to determine if all aspects of the case were handled appropriately by CPS."
A man and woman who lived at the apartment weren't home at the time, but they have reportedly been friends with Keshondria's family for years.
Justice's grandmother, Clarica Hull, says her heart goes out to the family of the teenager charged, but she says she's also happy to see the suspect facing charges.
"I've been knowing her and her kids, but physically being around them, no," said Clarica. "But I've been knowing the little 14-year-old, her and her sibling twin. I've been knowing them since they were little girls coming up."
Keshondria broke the sad news Clarica about Justice over the phone.
"I talked to her this morning from the Dallas County Jail, and she's still kind of torn down within herself," said Clarica.
Clarica says Keshondria had 51 days to go on the jail sentence she was serving.
"She has two boys, and Justice was her last baby," said Clarica.
Almost 100 people attended a vigil Tuesday night in Justice's honor in Oak Cliff.