Ricardo Arias, 17, of Roslindale, will be arraigned today on charges he gunned down a South End teen Saturday night, the Suffolk County District Attorney's office reports.
Arias, to be arraigned in Boston Municipal Court, allegedly pumped several bullets into Alex Sierra on W. Brookline Street before fleeing with an accomplice in a gold minivan.
The accomplice was arrested Sunday and is expected to be arraigned on charges of begin an accessory after the fact to murder and unlawful possession of a firearm, the DA's office reports. His name was not released because he is 16 and will be arraigned in juvenile court.
Sierra grew up in the Villa Victoria development around the corner from where he was murdered. The minivan was found not long after in the area of the Mission Main and Alice Taylor projects in Roxbury, where teens have long feuded with kids from Villa Victoria. In 2009, records show, Arias lived on Prentiss Street, in the Alice Taylor project.