A 19-year-old girl was slightly injured with a knife during an attempted robbery at the Südring street in Hamm yesterday, Wednesday, at 10:45 pm. While she was waiting for someone in the park, an unknown person approached her and demanded money. When the woman from Hamm told the man that she had none, he stabbed her once with a smaller kitchen knife.Then he let her go. The 19-year-old was able to walk to the hospital. The suspect is about 40 years old, 175 to 180 centimetres tall and has a thin stature. He had a full beard and a slightly dark skin. He was dressed in a grey jogging suit and a dark grey cap. Clues are requested to the police Hamm by calling 02381 9160.