Photo taken on Aug. 15, 2016 shows the bloodstain at the site of attack in Cologne, Germany. At least one man was seriously injured in a knife and shooting attack in Cologne, Germany on Monday. (Xinhua/Yu Guo)
Photo taken on Aug. 15, 2016 shows the bloodstain at the site of attack in Cologne, Germany. At least one man was seriously injured in a knife and shooting attack in Cologne, Germany on Monday. (Xinhua/Yu Guo)