A teenage girl in Brazil confessed to torturing her 5-year-old brother to death before eating his severed penis, police said.

Police are investigating the possibility that 18-year-old Karina Roque’s alleged crime against her brother, Maycon Roque, may have been part of a black magic ritual because his body was found on the floor surrounded by several candles.

On Thursday, Maycon Roque’s mother, who is not being named, discovered 18-year-old Karina standing beside her brother’s mutilated remains at their home in Sao Roque, southeast Brazil.

Detectives said the victim’s corpse had grotesque injuries. His head was partially decapitated, there were knife wounds to the wrist, both eyeballs had been pierced, the feet had been burned and the sister claimed she had “cut off her brother’s genital organs and eaten it.”

According to police, the mother went shopping and left her son in the care of her daughter while she was out. When she returned a couple hours later, she discovered the front door locked.

Karina reportedly refused to let her mother in. The desperate woman was only able to gain access after the door was kicked down by her brother-in-law, who lives nearby.

The horrific scene was so macabre that the mother fainted. Karina allegedly tried to escape as her uncle and other relatives attempted to restrain her.

“They tried to prevent her from running but she apparently became very aggressive and started throwing objects,” Detective Anderson Góes told FocusOn News.

“He uncle was hit and injured by a stone and she bit the family dog, which attacked her while she was being restrained by relatives.”

Karina admitted that she lured her brother into her bedroom by pretending they were going to play a game and then suffocated him with a pillow, police said.

Preliminary examinations indicate the child was dead before his body was brutally maimed and his body parts cannibalized.

Forensic investigators reportedly found a burned cellphone, a memory card, a penknife and a small amount of marijuana in the house.

“We believe the cellphone belongs to the suspect and was deliberately damaged by her to possibly destroy any evidence of online contacts,” Góes said.

“We are investigating if the child was killed during some kind of devil worshipping ritual. We want to know if the accused had links on social networks to a group of Satanists or black magic practitioners and if she was encouraged or incited by someone to commit the crime. She will also undergo tests to see if she is under the influence of drugs.”

Both the phone and memory card are being analyzed by officials for additional evidence.

Police said the teen’s family told them Karina never gave them any problems before. They described her as being quiet and reserved and said she’d “always taken care of her brother.”

Karina is charged with her brother’s murder and with the attempted murder of her uncle. She is being held in isolation in a cell at Votorantim Women’s Prison in Sao Paulo and placed on suicide watch.

The victim’s burial took place Friday morning. The family did not wish to be identified or comment on the tragic case.