A man is jailed in southern Illinois on charges he killed his 15-month-old son more than a year and a half ago.

A Massac County grand jury indicted 35-year-old John Pruett of Metropolis on Wednesday on a charge of first-degree murder.

Illinois State Police say toddler Jackson Pruett was taken unresponsive to a Metropolis hospital in April 2010, and died two days later at a St. Louis hospital.

Authorities say the boy died of a head injury.

Pruett was arrested Thursday.