A ticket inspector was kicked by a man who then tried to set his dog on him in a suspected racially aggravated assault at Fitzwilliam railway station.
British Transport Police (BTP) are appealing for witnesses to trace a man they want to speak to about the incident, which happened on Thursday, January 22.
The suspect is described as a white male, of strong build and between 30 and 35 years old.
He had short mousey-brown hair, a small moustache and a goatee type beard.
He had a muscular brown dog, possibly a Staffordshire bull terrier or similar, with him.
The dog was wearing a plastic red poppy on the collar.
Anyone who witnessed the incident or has any information about the suspect’s identity should call the BTP on 0800 405040 and quote reference number PL/004241/2015 or ask for PC1790 Bloomfield.
Alternatively, people can call Crimestoppers, anonymously, on 0800 555111.