Only after the square was reopened, after midnight, did the police begin receiving reports of the assaults.
During that time, young men appeared to have broken into smaller groups that would encircle a victim, with some groping her while others would steal her wallet or cellphone.
1"Nobody knew where to go,” Sascha Frohn, who said he was in the station on Thursday, told the public broadcaster WDR. “We stood with our backs to the wall and could see how people were robbed and German girls were groped. I was surrounded by a group of 50 to 60 people from Arabic countries. They would come up to us, shake hands and then try to reach into our bags.”
http://www.nytimes.com/2016/01/06/w...gne-were-unprecedented-germany-says.html?_r=0