In the fight, David was able to get a clear description of one of the suspects.
Authorities identified the victim as 34-year-old Thierry Tullus, of Waltham.
Boston Celtics forward Jared Sullinger pleaded not guilty Tuesday to charges he attacked his girlfriend last weekend.
A Waltham Police officer was in federal court Tuesday afternoon to face child pornography charges.
A Waltham man has been arrested in connection with the crash that injured a Bentley College student in September.
Police have one home invasion suspect in custody but another was able to get away.
David Lebrun was wearing a Marines uniform with several medals, including the Purple Heart, when he was pulled over Saturday for driving with a suspended license.
The bodies have not been identified yet, but police say the deaths are suspicious.