Fabrice Muamba: 'Offensive' Twitter comments prompt police inquiry
South Wales Police say a man, aged 21, has been arrested in connection with racially offensive comments made on the social network site Twitter.
It is understood to follow complaints about comments made following the collapse of Bolton footballer Fabrice Muamba during a FA Cup tie on Saturday.
Police said a man from Pontypridd is being held at Swansea police station.
Muamba, 23, is in a critical condition after suffering a cardiac arrest during the first half at Tottenham.
He is in intensive care at the London Chest Hospital.
The comments, which appeared on Saturday evening, have been removed from Twitter.