A mixed-race family with two young daughters were racially abused by a lout on a Tayside train.
British Transport Police have appealed for witnesses following the incident between Dundee and Arbroath at the weekend.
Shortly after 6pm on Saturday a man in his late 50s shouted racially offensive comments at a 29-year-old man and his 43-year-old wife.
The couple were travelling with their daughters aged 11 and six months and were extremely upset by the encounter.
The suspect, who was around 5ft 5in in height and wearing a brown jacket, alighted from the train at Montrose station
CCTV from the train and stations will be reviewed in an attempt to identify him.
The train involved was the 5.40pm Dundee to Aberdeen service.
Detective Constable Derek Alexander, officer in charge of the enquiry, appealed for witnesses to come forward.
He said: “This was a completely unprovoked incident which has really affected the family and I am anxious to trace anyone who has information which can assist our enquiries and urge them to get in touch.”
British Transport Police can be contacted on 0800 40 50 40 or by texting 61016 quoting reference B1 of 23/02/2016.
Information can also be given anonymously to the independent charity Crimestoppers on 0800 555 111.