Corie Walsh is charged with murdering her 2-year-old son at their Frankfort, Illinois, home. Her attorneys argued she was psychotic but a judge ordered her detained before trial.

An Illinois woman accused of killing her 2-year-old son last week was ordered to be held in jail during a court appearance Tuesday morning as she faces three counts of first-degree murder.

Corie Walsh, 40, was charged with first-degree murder after her son, Barrett 'Bear' Walsh, was found hanged in the basement of their family home on September 1.

Corie Walsh was ordered to be held without bond after prosecutors said she killed her 2-year-old son before harming herself.

Per court documents obtained by NBC News, Walsh, whose husband was working out of state at the time of their son’s death, told investigators she “did this to her baby because he was the ‘devil’ and the ‘anti-Christ.'” Walsh’s two school-aged children and an infant were also in the home but were not harmed.

A Will County judge rejected a request from defense attorneys that Corie Walsh be committed to inpatient psychiatric treatment.

An Illinois mom charged with murdering her 2-year-old son was denied a request to be released in her first court appearance Tuesday. Corie Walsh, 40, appeared in Will County Court in Joliet, Illinois, in handcuffs and shackles. She put her head down and cried at times during the hearing, according to ABC Chicago station WLS-TV.

A Frankfort mother charged with killing her young son, is expected in court Tuesday

The mother accused of killing her 2-year-old son in a horrifying scene that unfolded inside a suburban Chicago home also made statements about killing her husband and other children, prosecutors said during her first court appearance Tuesday.

Corie Walsh, 40, was charged with three counts of first-degree murder after her 2-year-old son Barrett was found dead in their basement, allegedly killed amid her fixation on the Lindsay Clancy trial