Police authorities want to insist the incident had nothing to do with the London bombing. However Butt is demonstrably dead and no one is likely to believe them. Fear and hatred feed themselves.
More on that theme from Nosemonkey at Europhobia, who reports on the role of the racist and anti-immigrant British National Party in the West Yorkshire area where apparently the London suicide bombers grew up:
I'm certainly unqualified to say whether what NM asserts here is true, but as a veteran of the Prop. 187 attack on immigrant human rights here in California and an observer of anti-immigrant panics in the US, it sure seems likely to me that he is on to something.