WALTHAM, Mass. – Massachusetts authorities say one of two men sought in connection with the fatal shooting of a 17-year-old Waltham youth last week has been arrested in Maine.

Middlesex District Attorney Marian Ryan and Waltham Police Chief Keith MacPherson said 21-year-old Taylor Poulin of Newton was arrested Wednesday night in Windham, Maine. He is expected to be arraigned as a fugitive Friday in Portland. He was sought on assault, gun and drug charges.

Authorities are seeking 22-year-old Domingo Mendes of Belmont on murder, gun and drug charges.

Tyler Zanco, co-captain of Waltham High School’s wrestling team, was shot the night of March 20 at an apartment complex.

The Boston Globe reported that an arrest warrant affidavit says Zanco allegedly was shot when he and two friends attempted to rob Poulin, believing he cheated Zanco’s cousin in a marijuana deal.