He has been caught, and was indeed an IS sympathiser, if it is the correct person they have right now which it does seem to be. Lord Umbasa only knows how many that reside in sweden with similar ideas brewing, i think this guy was known to have such ideas since he shared them on facebook. Somewhere i also read that he was about to be sent out of Sweden, or never truly was allowed to enter, either way i have little faith in swedens background checking and efforts into any such precautions.
It is a pity, but we have had it too good for too long.