Mom was told daughter, Deandrea Funchess, overdosed in February only for police to say boyfriend, Mayzio Arnold, internally decapitated her

Six months after the mother of his children died from what he claimed was a drug overdose, an Ohio man is behind bars, accused of allegedly beating the victim so severely, she was "internally decapitated."

A statement from Cincinnati Police confirms Mayzio Arnold, 25, was arrested and charged with murder on Wednesday.

Investigators allege he caused the injuries that led to the death of 24-year-old Deandrea Funchess. She was found unresponsive on Feb. 15 in a Hartwell home.

According to court records obtained by WXIX, the alleged attack on Funchess, Arnold's live-in girlfriend, was so intense, it caused the ligaments of her spinal column to be separated from the base of her skull — an injury known as atlanto-occipital dislocation.

It is alleged in the court filings that Arnold told authorities and Funchess' family she had died from a drug overdose.

Still, the investigation into the death of Funchess, a nursing home worker, continued. Eventually, medical examiners determined the cause of her death was homicidal violence.

Bernadette Davis, Funchess' mother, told WXIX she and Arnold had continued speaking after her daughter's death. She had no idea he was a suspect until she learned of his arrest.