This is the shocking moment a baby in a buggy is carried across railway tracks.
A man and woman were caught on CCTV getting off a train on platform one at Eastbrook railway station, Dinas Powys, at around 4.17pm on Tuesday, 9 October.
They both then climb down onto the tracks, and the man carries the baby and buggy across the tracks, closely followed by the woman.
The CCTV footage has been released by British Transport Police in a bid to catch the irresponsible pair.
Inspector Mike Jones, officer in charge at BTP Cardiff, said: "I am genuinely shocked to see that, despite our constant warnings, some people are still willing to risk their lives by trespassing on the tracks.
"Not only that, this footage clearly shows the man and woman pictured had complete disregard for the safety of others as they carried across an infant in a buggy.
"I cannot emphasise enough the dangers associated with this type of mindless behaviour. These two people were extremely lucky that a train was not passing through the area at the time, otherwise the consequences could have been unthinkable.
"It is staggering that people are still willing to risk everything by entering the railway - doing so with a baby in tow simply defies belief. Their behaviour is utterly reprehensible. Parents and adults should be leading by example, taking responsibility and emphasising the dangers to children.
"The few seconds saved by crossing the tracks could end up costing your life. Is it worth it? I am now asking for the public's help to identify these people and would urge anyone who has any information in relation to this incident to come forward."
Anyone with any information about the incident should contact British Transport Police on Freefone 0800 40 50 40 quoting background reference B3/WCA of 09/11/2012.
Alternatively, call Crimestoppers anonymously on 0800 555 111.
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