Updated with arraignment information.
A Dorchester man was charged with stabbing his downstairs neighbor to death early this morning.
Tu Nguyen, 28, of 45 Codman Hill Ave. was ordered to Bridgewater for 20 days of observation at his arraignment in Dorchester District Court, the Suffolk County District Attorney's office reports.
UPDATE, 4/30/12: Man charged with the murder.
The homicide unit is at 47 Winston Rd., where a body was found this morning.
The victim is Dorchester's 27th murder victim this year (map).
The homicide unit was on scene outside Dearborn Liquors, 60 Dearborn St., Tuesday night. The suspect may be a black man in his late 30s or early 40s, with "Jamaican style" hair under a long cap, who rode away on a bicycle.
UPDATE: Boston Police report the victim, a man in his 40s, died at Boston Medical Center.
Boston Police report a 19-year-old man was stabbed around 4:20 a.m. in the parking lot of the 7-Eleven at the intersection of Centre Street and S. Huntington Avenue. The victim was taken to Brigham and Women's Hospital, where he died of his injuries.