Makes sense to me. Here in the States they'd probably have read him his rights.
LOL! They'd have been too busy searching the pocketbook of an 85 year old white woman.
It sounds like SAS or someone following SAS doctrine for dealing with bombers. If you read the stories of the IRA guys the SAS got in Gibraltar, it's the same MO. No messing about, just empty a gun into chummy's torso at point blank.