Authorities are set to announce an arrest in connection with a deadly assault in Waltham, Massachusetts, last month.
Middlesex District Attorney Marian Ryan and Waltham police will hold an 11 a.m. press conference at the Waltham Police Department to announce the arrest, which they said is related to a fatal assault in Waltham on May 27. They said they will also be asking for the public’s assistance with their investigation…