“WOBURN – Middlesex District Attorney Marian Ryan and Malden Chief of Police Glenn Cronin have announced that Joshua Roush, 46, of Malden, has been convicted of the 2021 murder of Brian McDonald, 34, of Malden. Following a seven-day trial in Middlesex Superior Court, Roush was found guilty of first-degree murder. Judge Cathleen Campbell sentenced Roush to life in state prison without eligibility for parole.