BRIDGEWATER, Va.—A gunman shot and killed two campus officers at a private college Tuesday, prompting a protracted campus lockdown and search before the suspect was apprehended, state police and school officials said. The lockdown began in the early afternoon when Bridgewater College officials sent out a tweet in warning students and faculty about a shooter on campus. The college sent out a follow-up tweet about 2 p.m. saying police had apprehended a suspect after searching the campus but that students should continue sheltering in place. A news photographer captured an image of the apparent suspect being arrested, laying face-down on the ground as more than a half-dozen law enforcement officers approached with guns drawn. The college gave the all-clear about 4:30 p.m. No other injuries were reported. At a news conference Tuesday night, Virginia State Police spokeswoman Corinne Geller said that the shooting happened shortly after the campus officers responded …