A 19-year-old woman was indecently assaulted by a man in a high-visibility vest in Rustington, near Littlehampton.

The woman was walking down an alleyway south of Sheepfold Avenue and the railway station when she was attacked shortly after 10pm on Thursday.

A man on a mountain bike approached her and carried out an indecent assault, before punching her to the ground.

The woman was taken to Worthing Hospital for treatment and was discharged a few hours later.

The man was in his 20s and was wearing a yellow high-visibility vest with silver luminous stripes on the front.

Detective Sergeant Ruth Eady said: "The victim suffered a brutal and completely unprovoked attack.

"We are carrying out extensive enquiries in the area and appeal to anyone who was in the location between 9.45pm and 10.15pm on Thursday, October 14 to come forward."

Anyone who saw what happened is asked to call Sussex Police on 0845 6070999, quoting serial 1785 of October 14.