Colorado Springs, Colo.: A 22-year-old gunman opened fire with a semiautomatic rifle inside a gay nightclub in Colorado Springs, killing five people and leaving 25 injured before he was subdued by “heroic” patrons and arrested by police who arrived within minutes, authorities said Sunday. The suspect used an AR-15-style semiautomatic weapon in the Saturday night shooting at Club Q, a law enforcement official said. A handgun and additional ammunition magazines also were recovered, according to the official, who could not discuss details of the investigation publicly and spoke to The Associated Press on condition of anonymity. On its Facebook page,...