Violent Video Games Blamed in Family's Killing at Trial

Boy also had several other "risk factors"

An expert in video game violence testified that a 14-year-old boy who was killed along with his family in their central Illinois home played violent games and had several other risk factors that could lead someone to violence.

Craig Anderson, an Iowa State University professor, testified Tuesday in the trial of Christopher Harris, who is accused of murder.

Harris admits killing the boy, Dillen Constant. But Harris says he did so after walking into the family's home in Beason as the boy killed his mother, stepfather, stepbrother and sister.