JOURDANTON, Texas—A South Texas woman has been charged in the stabbing death of her toddler son.

Atascosa (a-tuhs-KOH'-suh) County jail records show 26-year-old Tashawna Caldwell was being held Monday on a charge of capital murder of a child younger than 6 years old. Jail records don't list an attorney for Caldwell, whose bond was set at $1 million.

Investigators are trying to determine what prompted the attack early Sunday at a home near Poteet (poh-TEET'). Deputies responded to a disturbance call. Sheriff David Soward says the boy, Caiden Parker, was dead at the scene. The victim would have turned 2 years old on Wednesday.

A second woman and an older child, who suffered minor injuries, were at the home where Caldwell was arrested.

Poteet is 25 miles south of San Antonio.