An 11-year-old girl was approached by a man who exposed himself to her as she was walking home.
It happened near Shelley Road, Ashton, Preston at around 3.45pm on Tuesday December 16. The man did not speak or touch the girl, who ran off, shocked but unhurt.
He is described as black with a long head, 5ft 10in, wearing grey joggers with worn knees, walking with a swagger talking loudly on his mobile phone.
Call police on 101.