A Dorchester man was sent for a psychological evaluation today following his arraignment on charges that he stabbed his elderly downstairs neighbor to death early this morning, Suffolk County District Attorney Daniel F. Conley said.

TU NGUYEN (D.O.B. 4/30/83) was arraigned on a single count of murder for the stabbing death of 72-year-old Mary Miller inside her Codman Hill Avenue home. Dorchester District Court Judge James Coffey additionally ordered Nguyen to Bridgewater State Hospital for a 20-day observation period.

Boston Police responded to the victim’s Codman Hill Avenue residence at about 1:45 this morning after a 911 call from inside the apartment. Inside, they found Miller unresponsive and suffering from multiple stab wounds. She was pronounced dead of those injuries a short time later. A young child present in the apartment was transported to Boston Medical Center for observation; that child was not physically injured and has since been released.

Boston Police homicide detectives made their way to the building’s second floor, where Nguyen was present. Based on evidence at the scene, witness statements, and other information developed throughout the morning, he was taken into custody and subsequently charged with Miller’s slaying.

Katherine Moran is the DA’s assigned victim-witness advocate. Attorney Shannon McAuliffe represents the defendant. He will return to court on March 9.