Massachusetts August 10, 2017 2:25 pm ‘The Fire Was Intentionally Set:' Waltham Fire Was Arson Fire officials have determined the cause of a major fire that tore through an apartment complex under construction in Waltham, Massachusetts last month to be arson. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 10:42 Multiple people arrested as police clear campus encampments 2:51 Sunny Saturday morning followed by clouds in New England 1:40 Heavy police presence near on-campus protests