So Fox, are these natives who've converted or are these migrants from the ME?
Unfortunately most aren't coming from the Middle East, though the Police Security Service (Norwegian domestic intelligence) has assessed that a handful of the groups members are Algerian born. Most however are European born, born to migrants, but European citizens regardless. From the UK, From Kosovo, from Norway, most aren't migrants but citizens of Europe which makes them harder to deal with due to freedom of migration clauses in the EU charter and the Norwegian deal with the EU. It also blunts the impact of deportation.
That said, the group only has a core of between 15-20 active members and an unknown number of sympathizers. Most of its "core" members were either killed fighting in Syria for ISIS or are imprisoned for criminal activity within Norway. Others have been deported, Omar Cheblal being one such individual and ended up in Greece. He later traveled to Syria and died while fighting there.
We can't blame migrants solely since most are European born and their parents aren't to blame for their radicalization.
Fortunately Norway has a strong domestic intelligence capability and cooperates on counter-terrorism with the 5 Eyes, so usually know what's up in our country. The same systems that earned us the moniker of "NATO's Northern Eyes" gives us the capability to turn those eyes and ears within, rather then pointed at our pesky Eastern neighbor.
We keep hearing the claim (albeit primarily from Pakistanis) that Islam is the fastest growing religion in Europe.
In Norway Islam has seen an increase of 26.5% since 2011. This still represents a paltry 2% of our religious population trailing the Church of Norway by over 70%, but the growth isn't due to an influx of Muslims or citizens converting, it's largely due to Norway becoming less religious in recent years and that balances out the statistics making Islam seem greater in numbers and growth by comparison.
To say it's the fastest growing religion in Norway wouldn't be wrong, but proper context needs to be establish or people get the wrong notions in their head.
Is it mainly countries like France and the UK, or are you guys noticing it too?
It's mostly France and the UK, Norway actually has very strict migration policies. While Sweden has a reputation for accepting anyone with a pulse and that's turned around and bit them in the butt badly, historically and currently Norway's been more closed off to outsiders. We've opened up a bit in recent years to legal migration, but we still deport thousands every year who either come illegally or overstay their welcome (work visa expiration for instance). I wont tell you there isn't a problem with migration either since we do sometimes get some bad seeds, but that's something France and the UK have a greater problem with then we do.