Police are appealing for information after a teenage boy exposed himself to a woman and then sexually assaulted her.
The incident occurred at around 4pm on Sunday on the pathway between Bamber Bridge football club and Matalan.
The boy, thought to be aged around 16, approached the victim, who is in her 60s, and exposed himself to her.
He then made a sexually explicit comment, before touching her inappropriately and making off from the area.
The boy is white, around 6ft tall, slim, with short, fair hair and speaking with a local accent. He was wearing a dark grey zipped jacket and grey jogging bottoms.
Police believe a family of four people were on bikes on the pathway at the time and may have seen something.
Following the incident the victim approached another woman - described as being in her 50s, white and with long, dark brown hair – to warn her about what had happened.
Police would like to hear from the family, the woman, or anybody else in the area who saw the offender or has information about who he may be.
DC Andrew Causey, of Chorley CID, said: “This was a shocking incident which has left the victim understandably shaken, and an investigation is very much underway to find the person responsible.
“We are now appealing for witnesses and would like to speak to anyone who can help with our enquiries.
"Perhaps you saw what happened, maybe you were in the area at the time and saw someone matching the description of the suspect or perhaps you think you know who is responsible.
“We would also particularly like to hear from the family who were riding bikes in the area at the time, or the lady who was spoken to by the victim.
“Whatever you know, please get in touch straight away.”
Anybody with information is asked to get in touch on 101, quoting log 1138 of September 26.
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