A 66-year-old Chicago man is accused of killing his 88-year-old mother, wrapping her body in a rug, and hiding her in a sealed basement room inside her own home.

Kevan Works has been charged with first-degree murder and concealing the death of a person, according to the Chicago Police Department.

The victim, Daniest Graves, was found on April 7 in the basement of her home on South Lafayette Avenue. Prosecutors say her body had been rolled up in a rug, partially wrapped in garbage bags, and secured with duct tape.

Investigators said the room where her body was found had been blocked off by a bookcase.

Graves had not been seen alive since March 26.

Concerned family members first raised the alarm. Prosecutors say Graves’ sister went to check on her on March 28 but was prevented from entering the home by Works.

At the time, Works told police he had not seen his mother since March 27.

Authorities say he had been living with her since Thanksgiving.

When police searched the home, they found multiple weapons, including a folding blade knife, brass knuckles, a hammer, a bowing knife, and bleach, according to prosecutors.

An autopsy revealed Graves suffered 17 injuries, including multiple knife wounds.

Investigators also found her purse and wallet discarded in a garbage can in the garage. A jewelry box inside the home had been cleaned out, with its contents laid out, according to prosecutors.

In court, a judge questioned the severity of the alleged crime.

“If you could do this to your mother … what would you do to your family?” Judge Rivanda B. Doss said during the detention hearing.

Prosecutors suggested the killing may have been financially motivated.

“This was a crime committed, it seems like, for some type of money gain,” the judge said, citing the condition of items inside the home.

Works was taken into custody on April 7 and remains held as the case moves forward.

He is scheduled to appear in court on April 29.

Authorities have not released further details about what led up to the killing, but prosecutors say the evidence points to a violent attack followed by an attempt to hide the crime inside the home.