This is an archived article that was published on sltrib.com in 2013, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

A North Ogden man accused of killing his 16-year-old baby sitter is back at the Utah State Prison after being treated for stab wounds at a local hospital.

Eric Millerberg, 37, was stabbed multiple times in his cell in Uinta 2, a maximum security unit at the prison, Monday night. Investigators suspect Millerberg's cellmate since no one else had access to the cell, according to a prison spokesman. The Unified Police Department is investigating the attack.

Both Millerberg and his cellmate belong to the gang Silent Aryan Warriors, one of the larger gangs at the Utah State Prison. Investigators found a sharpened piece of metal that is believed to be the weapon in the cell, said Steve Gehrke, spokesman for the Utah Department of Corrections.

Gehrke said Millerberg was returned to the prison Wednesday morning and will be kept in the infirmary until his condition is stable. He then will be moved to a cell.

Millerberg is charged in the death of Alexis Rasmussen.

Dea Millerberg, his wife, testified last April at her husband's preliminary hearing that Eric Millerberg injected a fatal mix of heroin and methamphetamine into the teen in September 2011. After Rasmussen died, the couple panicked and dumped her body in a remote part of Morgan County. Police located Rasmussen's body five weeks after she disappeared.

Dea Millerberg is charged with desecration of a human body related to the girl's death.

Eric Millerberg was returned to prison on probation violations related to a 2010 forgery case and is awaiting trial on charges of first-degree felony child abuse homicide, obstruction of justice, desecration of a human body and having unlawful sexual activity with a minor. Rasmussen was the baby sitter of Millerberg's children, police have said.