A roof-deck fire atop the seven-story 492 Mass. Ave. quickly went to two alarms after it broke out shortly before 9 p.m. The fire was declared knocked down at 9:04 p.m.
UPDATE: The Boston Fire Department reports the fire started with an illegal charcoal grill and did an estimated $200,000 in damage. "As we do many, many times; a reminder that grills in Boston are not allowed on roof decks."