Police are investigating an alleged assault which took place at approximately 3pm on Friday 28 November 2014.
A 30-year-old woman suffered wrist injuries in the assault which happened as she walked with her six week-old baby on Carlton Street and Swindon Street in Bridlington.
The suspect is described as white, in his 30s and of slim build.
Police are appealing for a man who was on Carlton Street at the time and intervened in the incident to contact them. Anyone else who witnessed the incident is asked to contact the police on the non-emergency number 101 quoting crime reference CW/2083432/2014. Alternatively call Crimestoppers anonymously on 0800 555 111.