A Brockton man was arrested on a murder charge in North Carolina on Wednesday in connection with the fatal shooting of a 37-year-old man in Boston in 2017, police said.Alan Lewis, 40, was arrested in Charlotte, North Carolina after an “extensive multi-agency investigation” by Boston police, U.S. Marshals and Massachusetts State Police. He is expected to be arraigned on a murder charge at a “later date,” Boston police said in a statement.