An Illinois mother, who was allegedly "invested in" the murder trial of Lindsay Clancy, has been charged with murdering her 2-year-old son.

Corie Walsh, 40, was charged with first-degree murder after her son, two-year-old Barrett 'Bear' Walsh, was found dead in the basement of their Illinois home on Tuesday.

Corie Walsh has been accused of killing her two-year-old son hours after she texted friends about the Lindsay Clancy trial.