MUNICH (GERMANY), July 24, 2016 (Xinhua) -- Flowers and candles are placed in front of the Olympia shopping mall to pay tribute to the Friday shootout victims in Munich, Germany, on July 23, 2016. An 18-year-old German-Iranian gunman opened fire in the crowded shopping mall here on Friday evening, killing 10 and injuring 27. (Xinhua/Luo Huanhuan)