HARTFORD, Conn. (AP) A 24-year-old man with autism has been committed to the state Psychiatric Security Review Board for 20 years after being found not guilty of manslaughter by reason of mental defect in November.

The Hartford Courant reports Judge Julia Dewey ruled that prosecutors proved beyond a reasonable doubt that Anthony Henry was guilty in the stomping death of 58-year-old Robert Boulay.

Henry, who has autism spectrum disorder and intermittent explosive disorder, fatally attacked Boulay on Aug. 3, 2015 at a Walgreens in East Hartford.

Boulay sustained massive head trauma and died six days later at St. Francis Hospital and Medical Center.

Police say Boulay was bullying Henry from when he got off the bus to the store.

Henry will be sent to the Whiting Forensic Division of Connecticut Valley Hospital.