A woman was sexually assaulted on a bus.
The 21-year old woman was travelling back to her home in Wakefield on the 189 service from Castleford when she was attacked.
The incident took place at around 10pm on Bank Holiday Monday, April 1.
A police spokesman said: “The suspect was a white male aged around 19 years old with a muscular build and short, light brown coloured hair.
“At the time of the incident he was thought to be wearing tight cream trousers a striped T-shirt and blue body warmer.
“He also had a tattoo on his right arm.”
Officers from the neighbourhood police teams have increased patrols in the areas near the bus stations.
Anyone with any information should contact DC Katy Scarr on 01924 293873 or call Crimestoppers, anonymously, on 0800 555 111.