Swedish police investigating two blasts that rocked central Stockholm on Saturday, killing the suspected bomber and wounding two, said on Sunday they had good leads into what they said were "terror crimes."
Before the explosions, the Swedish news agency TT received a threatening letter about Sweden's military presence in Afghanistan and caricatures of the Prophet Mohammad drawn several years ago by a Swedish cartoonist.
Linky

I gotta say, if this is the best they can do, why are we worrying so hard about them...
Look at the situation:
-Sweden, a country with minimal invasive police activity
-Bomber couldn't even knock down a building
-Only death was the bomber himself

Obviously a total wanna-be with no serious skills.
Where's the big bad threat? If this is all they can manage, I think we won the war on terror.