Dozens of witnesses have been questioned and thousands of documents examined, and in the latest round of cross examination Frauke Mahr, 63, who is the manager of the Project for Girls in Cologne revealed that the young woman had ended up pregnant after being raped in front of the main train station.

She told the investigators: ‘She was separated from her girlfriend, and ended up being shoved from one man to another. She was then thrown to the floor and raped.

‘She told me that a few metres away she saw another girl lying on the ground, also being raped.

‘She had tried to signal to the other girl that she should close her eyes, but the man then grabbed her own head and forced her to look at him.’

Her ordeal ended when a policeman pulled the man away and she ran home in a panic.