From left, Joell Williams; Nick Katsoris, founder, president and executive director of The Loukoumi Make a Difference ...

Morrissey said Tuesday. Joell Williams, whose last known address was in Dorchester, was arrested Friday on outstanding warrants after police learned he was at a residence in Mattapan. Williams was ...

Joell C. Williams, 35, was first arrested Friday on outstanding warrants unrelated to the January 30 shooting. Sign up for our Newsletters The outstanding warrants developed into multiple assault ...