Inspector Michael Edwards from the British Transport Police says cable theft is "an attractive proposition for would-be thieves", but that the police are cracking down on it.
Rail services on the Rhymney valley line to and from Cardiff have been severely disrupted today because of a cable theft. The incident has already caused around 800 minutes of delays and many cancellations according to Network Rail.
– Mark Langman, Network Rail Wales
The cable theft incident on the Rhymney valley line has resulted in a very difficult journey and a lot of frustration for passengers who travel on that line today. Dozens of train services have already been affected by this incident, disrupting passengers travelling into and out of Cardiff.
We are doing everything we can to protect the railway and will continue to work closely with British Transport Police and other rail partners to do everything in our power to deter thieves and bring those who attack our network to justice.