A woman was slapped and kicked by a man sporting a wolf tattoo as she walked with friends across The Racecourse in Northampton.
The victim suffered injuries to her nose and body following the assault some time between 11am and 1pm on Sunday, August 23.
The offender is described as being aged about 25, 6ft, with an athletic build and short hair. He had a wolf tattoo on his forearm and he was wearing a black Nike baseball cap, a black top, light blue shorts and grey trainers.
Anyone with information can all Northamptonshire Police on 101 or alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.