I strongly suspect BM is a jihadist and as such an enemy who will say anything to discredit western governments and will seek to attack us.
I suspect him not because he black or because he is a Muslim. Hundreds of thousands of such live here and I know and work with many.

I suspect him because he has followed the path of other Jihadists from this country to Afghanistan and the border country of Pakistan
Few non jihadists are likely to make that journey.
As I said, not proof but strong evidence.