A man has been caught on CCTV leaving a baby unattended while he urinated at a railway station, before stealing a teenager's bicycle.
British Transport Police are appealing for information after releasing CCTV footage of the incident, which took place around 7.45pm on Saturday, 30 May, at Coryton railway station in Cardiff .
PC Chris Jones, who is investigating the incident, said: "The victim, a 15-year-old boy, locked his mountain bike to a lamp post at the station. However, when he returned later in the day, he discovered it had been stolen.
"CCTV enquiries show a man entering the station with a baby in a pushchair. A short time later, he urinates on the seats in the waiting shelter before proceeding to rip a bicycle free of its lock.
"While stealing the bike, the child was left unattended in the pushchair, just a few feet away from the track.
"He then finishes a drink he had with him and throws the empty can on the floor before leaving the station with the stolen bike."
Having followed a number of lines of enquiry - including circulating images on police intelligence databases and to rail staff in the area - officers have now released the footage in a bid to identify the man.
The stolen Saracen mountain bike, which was black and white with front suspension, was worth around £300.
PC Jones added: "There are lots of things people can do to lessen their chances of becoming a victim of bike theft, like ensuring their property is adequately marked and secured, which makes it much easier to identify and therefore helps reduce the risk of theft.
"Thieves should also be aware that most cycle racks are covered by CCTV, so it's only a matter of time before we track them down."