Police have released CCTV images of three people they want to find after rail staff at Bexhill were targeted with verbal abuse.
PC Peter Cooke, the investigating officer, said: "We are keen to speak to the man and woman in pictures one and two after a conductor was verbally abused at Bexhill station around 8pm on Saturday, 7 September.
"The second incident happened occurred about 10am on Monday, 16 September. The conductor approached a man and asked him to show his ticket. The man refused to show proof of travel and began to verbally abuse and swear at the conductor."
Anyone with information is asked to contact British Transport Police on 0800 40 50 40.