A man arrested in connection with the death of a 3-year-old girl at 11 Potter Street, a two-family home in Willimantic appeared in court Monday.

The state's attorney called this one of the worst cases of child abuse she has ever seen.

Carroll L. Bumgarner-Ramos, 29, who was living in the home with the child's mother, was charged with first-degree assault, risk of injury and committing an offense while out on release. Bond is set at $1 million bond.

The arrest warrant says the little girl had injuries consistent with sexual assault, as well as cuts all over her body. Both of her eyes were swollen shut and she had possible burn marks on her feet.

"Those photos demonstrate indescribable atrocities to that child. The words in the affidavit couldn't even describe," State's Attorney, Patricia Froehlich, said.

Police said they received a call for an unresponsive girl at 10:38 p.m. Thursday. A man said he was home and heard the child's mother scream for help.

Emergency responders transported the child to Windham County Memorial Hospital, where she was pronounced dead, according to state police.

The official cause of death has not been released, but officials said it appeared to be caused by a skull fracture.

State's Attorney Patricia Froehlich said in court that the injuries to the little girl were "indescribable" and said she had "multiple traumatic injuries."

Ron Johnson is Bumgarner-Ramos' defense attorney.

"I know he's devestated and we have to let the court and the system take its course," Johnson said.

Police said the investigation is ongoing and more charges are possible.

Bumgarner-Ramos' ex-girlfriend, who is six months pregnant, was in court and said Bumgarner-Ramos treated her 8-month-old daughter like his own.

"He bought diapers, clothes, changed her, fed her, put her to sleep, let me sleep. I just don't picture him doing that to a baby," she said.

The medical examiner will perform an autopsy to determine the cause of death.

Bond was originally set at $1.5 million, according to state police.