murdered woman's baby cut from womb

This is some horrifying news out of Washington... Police say a pregnant woman was killed after being stabbed multiple times in the chest and her nearly full-term baby was cut from her womb: Police say Wash. woman's baby was cut from womb. Sick. The baby boy was hospitalized in Spokane in critical condition.

According to court documents, 27-year-old Araceli Camacho Gomez had her hands and feet bound with yarn and suffered "massive trauma to her stomach area" late Friday night. An autopsy showed she died of the chest wounds, but had other wounds "consistent with the cutting of the body to remove an unborn child." Her body was found early Saturday in a local Park.

23-year-old Phiengchai Sisouvanh Synhavong has been arrested for investigation of first-degree murder and is accused of trying to pass the infant boy off as her own in calls made late Friday night to emergency dispatchers. She was being held without bail Monday, with another court appearance scheduled Wednesday.

Gloves soaked in blood, a boxcutter, bloody paper towels, yarn, a baby bottle and baby socks were apparently among some of the items found in Sisouvanh Synhavong's purse. It's seriously disturbing. What could compel someone to do something like this?