Police have reportedly stepped up their security measures ahead of Sunday's South Wales derby between Cardiff City and Swansea City.
The authorities are taking precautions for a potential hostile atmosphere between both sets of fans, who are witnessing their teams play one another for the first time in the Premier League.
It is understood that British Transport Police will be situated at every train station between Carmarthen and Cardiff wearing body cameras to film supporters travelling in areas without CCTV, according to the Daily Mail.
Officers will also be placed on the train services in order to record any possible altercations between the two sets of fans.
