British Transport Police say they are working to identify the individual as part of their investigations into the incident near Llanelli.
A spokesperson for the British Transport Police said: “Officers were called to the line in Llanelli at 9.40am this morning (21 March) following reports of a casualty on the tracks.
“Paramedics also attended however sadly a person was pronounced dead at the scene. Officers are working to identify the person and establish the full circumstances behind their death.”
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(Lead image: Transport for Wales)
