* Computer and shirts taken * Thefts happened after fire in basement * Organisers say security tightened (Adds Rio2016 reaction) By Alan Baldwin RIO DE JANEIRO, July 31 (Reuters) - Team shirts and a laptop computer belonging to a cycling official have been stolen from the Australian building in the athletes' village at the Rio Olympics, team chief Kitty Chiller said on Sunday. The theft is the latest in a string of incidents affecting the Australians, their woes perhaps highlighted by the team holding daily briefings where others have not. More...