Brown University shooting: police seek witness who came close to gunman

A manhunt for the mass shooter who opened fire in an exam room at one of America’s top universities stretched into a fifth day on Wednesday with no apparent police progress in identifying a suspect or a motive. The only new information from police at a media briefing on Wednesday was an appeal for a witness believed by investigators to have come close to the suspected gunman on the grounds of Brown University in Providence, Rhode Island. The shooting happened Saturday, when a man with a rifle...