Fears over Islamic radicalisation in Cardiff
23 June 2014 Last updated at 20:14 BST
Cardiff has an ongoing problem with the radicalisation of young Muslims, said an academic who has studied the issue.
Two men from the city have been identified taking part in what appears to be a Jihadist recruiting video, which was posted online last week.
It is thought Reyaad Khan travelled to Syria with friend Nasser Muthana who also appears in the footage.
Khan lived close to the Cardiff men jailed over the London Stock Exchange bombing plot in 2012.
Jordan Davies reports for BBC Wales Today.