A man is in hospital after being attacked at a railway station.
The victim was hit over the back of the head, which caused him to fall and bang his head on the pavement, at Johnstone Railway Station at around 7.15pm on Friday.
The man is still in hospital receiving treatment for significant head injuries.
The suspect is described as a white male with short dark hair, around 5ft 6ins, wearing a Fila jumper with white writing, red cuffs and white stripes down the arms, and white tracksuit bottoms.
The suspect was also carrying a black bag.
British Transport Police are appealing for anyone who witnessed the incident to come forward.
Anyone with information can contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 473 of 26/02/21.
Alternatively they can call Crimestoppers anonymously on 0800 555 111.