Harford County Sheriff's Office Detectives responded to Johns Hopkins Pediatric Trauma Center on December 29 for a report of suspected child abuse.
There, detectives learned that the infant had multiple skull fractures, brain bleeds, a fractured leg, and "numerous other life-threatening injuries," according to officials.
Detectives began an investigation that included a search of the child's residence in the 200 block of Mayberry Drive in Aberdeen as well as interviews with multiple potential witnesses and suspects.
Early results from the investigation pointed to the infant's mother, Dennis, as having sole care and custody at the time the injuries occurred.
As the investigation continued, the child died from her injuries on December 31.