Arrest made in triple shooting that killed Mattapan grandmother, police say

Boston police said Anthony Davis, 37, of Mattapan, has been charged with unlawful possession of a firearm; unlawful possession of a firearm, fourth offense; and armed career criminal Level 1. Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ Get more Boston news: http://www.wcvb.com Like us:   / wcvb5   Follow us:   / wcvb   Instagram:   / wcvb5