The Federal Bureau of Investigation confirmed Friday that former U.S. President Donald Trump’s ear injury was caused by a bullet, following days of speculation about the exact nature of his injury. “What struck former President Trump in the ear was a bullet, whether whole or fragmented into smaller pieces, fired from the deceased subject’s rifle,” the FBI said in a brief statement. Other details were not provided but Friday’s statement was the first time an agency went on the record to describe the exact cause of Trump’s injury. Earlier this week, FBI Director Christopher Wray’s testimony befo…