Police have released an EvoFit image of a teenager they want to speak to in connection with a sexual assault.
At about 5.35pm on November 30, a 57-year-old woman was walking in The Heathers in Clayton Brook when she was approached from behind by a male.
He walked alongside her before grabbing her and making a sexual comment.
The woman shouted at him and he left the area.
The man is described as white, aged 17, slim, with a pale face, narrow eyes and lips and was wearing a long-sleeved high visibility jacket with a hood.
PC James Colclough, of Lancashire Police, said: “This was a particularly frightening assault for this woman and we want to find this man immediately.
“If you recognise the picture of this man, we urge you to contact Lancashire Police.”
If you can help, contact police on 101 quoting crime reference SC1507013.