WICHITA, Kan. (AP) — A Wichita woman and her boyfriend are being held on suspicion of first-degree murder after the woman’s 3-year-old daughter died at a hospital.

KAKE-TV reports Emma Krueger died Wednesday night, two days after she was hospitalized with what doctors described as head injuries and extensive bruising.

The 24-year-old mother and her 23-year-old boyfriend were initially arrested on suspicion of child abuse. Police rebooked them following the girl’s death on suspicion of felony first-degree murder.

Investigators expect to present their case to the Sedgwick County district attorney on Friday.

Police said the adults and the toddler had been living at a Wichita apartment complex for about three months. Investigators believe Emma had been abused for several weeks before she was taken to the hospital Monday when she stopped breathing.