Riots broke out in a Cardiff suburb after police were called to a serious crash on Monday evening - May 22. Cars were torched and missiles were thrown at police officers as hundreds gathered near the scene of the crash in Ely.
Two people died in the crash, and police and crime commissioner Alun Michael said on Tuesday morning - May 23 - that rumours on Monday night that the deaths had followed a police chase were not true.
However, officers are now investigating footage that emerged later on Tuesday which appears to show two young people on an electric bike being followed by a police van just moments before the fatal crash.
