The woman, identified as Sarah, was found shot to death in her cell in the Cook County Jail on July 4.
She was the first inmate to be killed in Cook County jail since the prison was opened in 2002.
A day after the murder, Cook County Sheriff Tom Dart announced that he was launching an internal investigation.
The woman was a member of a local church who attended a Bible study and was expected to return to her congregation on Sunday, according to a statement from the sheriff’s office.
The sheriff’s statement said that when the woman went into her cell to attend her Bible study, she was shot by an inmate who was “unlawfully present.”
The sheriff said that the inmate was later arrested and charged with murder.
At the time, the sheriff said, there was “no evidence to suggest the shooting was racially motivated.”
Cook County State’s Attorney Anita Alvarez has said that she would have charged the inmate with murder had he not been able to be found.
On Thursday, prosecutors announced that they would not seek the death penalty for the inmate, but would instead seek to use a lesser charge, a first-degree murder charge.
On Monday, Cook sheriff’s officials told CNN that they were aware of the case and were in contact with the victim’s family.
The prosecutor’s office released a statement saying the investigation was ongoing and that it was “aware of the incident and will review it as it progresses.”
On Tuesday, the Cook family said in a statement that they “were deeply saddened by this news.”
They said that Sarah was a young mother who loved to cook and was a strong believer.
“Her life was taken because of her faith,” the statement read.
“We thank the countless people who have been praying for us during this time.”
A vigil will be held in the neighborhood of St. Mark’s Church, where Sarah was married for nearly a decade.
The family also released a video of the moment they discovered Sarah’s body.
“As we prepare to bury our beloved Sarah, we ask for your prayers and support for the families of those who were hurt in this tragedy,” the family wrote in the video.
The video has since gone viral, receiving more than 2 million views.
Sarah’s sister, Jessica Bowers, told the Chicago Sun-Times that she felt the pain of her sister being killed “at the hands of people who believe that they can make people feel better than they feel.”
“You can’t just say you love somebody, but you’re gonna hurt somebody else,” Bowers said.
“You don’t want to hurt a person, but it’s the wrong time to do it.”
“If you don’t care, it’s not gonna happen,” Bower said.
The Sun-News also reported that the Cook county medical examiner said that they found no evidence of a struggle or any signs of trauma on Sarah’s neck.
The Associated Press contributed to this report.