British Transport Police are appealing for witnesses as they investigate an alleged racially aggravated assault on a member of staff at Reading station.
A man was asked to leave a train following a dispute over a ticket at around 9.30am on Monday 22nd April.
Officers say the man then reportedly became racially abusive and punched the staff member.
Police say the man then ran off and is then understood to have travelled from Oxford and intended to get to Slough.
Officers have released a CCTV image (pictured right) of a man they want to speak to in connection with what happened.
Anyone who knows him is asked to contact British Transport Police by texting 61016, or by calling 0800 405040 and quoting reference 1900023547.