Humberside Police is appealing for witnesses to an alleged assault on the alleyway near St Marys Walk, Bridlington at between 0900hrs and 0915hrs on Wednesday 18 March 2015.
A 25-year-old woman was walking along the alley when she allegedly saw an unknown man urinating against the fence and as she passed she said something and the man allegedly took offence and grabbed the woman pushed her against a fence.
The woman then ran away and was unhurt.
The man has been described as white, around 30-years-old, 5ft 7ins tall with a slim build and blonde coloured curly hair shaved at sides. He was wearing a blue/grey coloured jacket, jeans and was carrying a plastic bottle.
Anyone with witnesses to the incident or details about the man are urged to call Humberside Police on 101 quoting crime reference number 2103329 or Crimestoppers on 0800 555 111.