May 7, 2015 9:40 pm Police Officer Dies From Apparent Head Injury An investigation is underway after Keith Trombley, a police officer in Nashua, New Hampshire, found suffering a head wound died from his injuries. US & World Videos 2:36 Tracking blistering cold temperatures on Mount Washington 3:34 DOJ ordered to step up immigration enforcement 2:07 Federal agents seen conducting operation in East Boston 3:11 Electric vehicles in Massachusetts: Are we meeting our goals? 2:24 Primary care doctor shortage leads to long wait times in Mass.