A U.S. Marine in his 20s in Okinawa Prefecture was referred to prosecutors on Thursday on suspicion of sexually assaulting and injuring a woman in her 20s in late June, investigative sources said.The case comes after two other alleged sexual assaults involving U.S. servicemen became known in June in the prefecture, which hosts the bulk of U.S. military facilities in Japan.The latest incident, which occurred in the northern part of the prefecture's main island, was reported to police by a medical institution that the victim visited shortly after the alleged assault.The suspect, who is in U.S…READ FULL ARTICLE