WICHITA, Kan. (AP) — A man has been charged with first-degree murder in the death of his girlfriend’s 17-month-old daughter over the weekend.

The Wichita Eagle reports that 21-year-old Michael Ross was charged with murder and one count of child abuse Tuesday.

Police say Ross was supervising Grace Harris while her mother was at work. Police responded to a call that the girl had fallen. Police say she died after sustaining multiple bruises, internal injuries and a brain bleed.

Ross appeared in court over a closed-circuit monitor from the Sedgwick County Jail and said he didn’t understand the murder charge against him and didn’t have a chance to tell his “side of the story.”

Ross is being held on a $500,000 bond and is set to appear in court Nov. 25.