MILWAUKEE - A Milwaukee man is accused of setting his wheelchair-bound sister on fire, and killing her, according to a criminal complaint.

Nasif Salaan Hibbler, 30, is charged with first-degree intentional homicide in the death of his sister, Shakira Hicks, according to TODAY'S TMJ4 sister station Channel 3000 in Madison.

Police said Hibbler walked into a Milwaukee police station on Saturday and told officers, “I just set my sister on fire.”

Officers went to the man’s home and found a fire inside the home and a woman who had been injured in the fire.

Hicks has cerebral palsy and was not able to get out of the wheelchair, police said.

The criminal complaint said isopropyl alcohol was found in the area of the fire, and the cause of the fire was determined to be arson.

Detectives said Hibbler admitted to setting the fire.

“'Peoples' voices' began to talk to him, telling he better do something or they were going to kill him,” the complaint said.

Hibbler told police he had threatening voices in his head. He told police, famous, "rappers were attempting to sexually assault him through the couch he was sitting on."

Hibbler says he grabbed a bottle of rubbing alcohol to try and show the voices he was willing to use it. He says the "sexual assaults" continued so he sprayed the rubbing alcohol on Hicks' head and face. He says she was sitting awake in her wheelchair and was crying when he sprayed the alcohol on her.

Once he lit her on fire, he told police "that his sister began to cry and scream which caused him to be afraid."

Hibbler's criminal record dates back to 2003. He has various drug possession charges, restricting or obstructing an officer, battery, interfering with firefighting equipment and negligent handling of burning material. If convicted of the murder of his sister, he faces life in prison.

Hibbler made an initial court appearance on Thursday.