the met

[MKFox]

I would love to know your reasoning of how he was identified as a potential suicide bomber.

I don't have proof, but if a unit of our counter terrorist section of the police deemed him a risk then I'm prepared to accept their reasons.
Albeit misplaced in this instance...

 

[Disco Bob]

I would love to know your reasoning of how he was identified as a potential suicide bomber.

Swarthy, foreign looking gent looking lost in London.

QED.