Police in South Normanton are calling for witnesses after reports a man followed a 14-year-old girl before performing a sex act in front of her.
The girl was walking along the alleyway between Pinxton Lane and Storth Lane at 2pm on Wednesday, August 21, when she saw a man with dark blond hair in his 20s wearing a blue hooded top and black jogging bottoms.
As she carried on walking on Pinxton Lane, she turned round to see the man was still following her.
When two metres away the victim says the man exposed himself and began to perform a sex act on himself.
If you saw a man matching the description call police on 101.